Create CONTRIBUTING.md

Author: AnasImloul

CONTRIBUTING.md

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+# Welcome to GitHub docs contributing guide <!-- omit in toc -->
+
+Thank you for investing your time in contributing to our project! Any contribution you make will be reflected on [docs.github.com](https://docs.github.com/en) :sparkles:. 
+
+Read our [Code of Conduct](./CODE_OF_CONDUCT.md) to keep our community approachable and respectable.
+
+In this guide you will get an overview of the contribution workflow from opening an issue, creating a PR, reviewing, and merging the PR.
+
+Use the table of contents icon <img src="./assets/images/table-of-contents.png" width="25" height="25" /> on the top left corner of this document to get to a specific section of this guide quickly.
+
+## New contributor guide
+
+To get an overview of the project, read the [README](README.md). Here are some resources to help you get started with open source contributions:
+
+- [Finding ways to contribute to open source on GitHub](https://docs.github.com/en/get-started/exploring-projects-on-github/finding-ways-to-contribute-to-open-source-on-github)
+- [Set up Git](https://docs.github.com/en/get-started/quickstart/set-up-git)
+- [GitHub flow](https://docs.github.com/en/get-started/quickstart/github-flow)
+- [Collaborating with pull requests](https://docs.github.com/en/github/collaborating-with-pull-requests)
+
+
+## Getting started
+
+To navigate our codebase with confidence, see [the introduction to working in the docs repository](/contributing/working-in-docs-repository.md) :confetti_ball:. For more information on how we write our markdown files, see [the GitHub Markdown reference](contributing/content-markup-reference.md).
+
+Check to see what [types of contributions](/contributing/types-of-contributions.md) we accept before making changes. Some of them don't even require writing a single line of code :sparkles:.
+
+### Issues
+
+#### Create a new issue
+
+If you spot a problem with the docs, [search if an issue already exists](https://docs.github.com/en/github/searching-for-information-on-github/searching-on-github/searching-issues-and-pull-requests#search-by-the-title-body-or-comments). If a related issue doesn't exist, you can open a new issue using a relevant [issue form](https://github.com/github/docs/issues/new/choose). 
+
+#### Solve an issue
+
+Scan through our [existing issues](https://github.com/github/docs/issues) to find one that interests you. You can narrow down the search using `labels` as filters. See [Labels](/contributing/how-to-use-labels.md) for more information. As a general rule, we don’t assign issues to anyone. If you find an issue to work on, you are welcome to open a PR with a fix.
+
+### Make Changes
+
+#### Make changes in the UI
+
+Click **Make a contribution** at the bottom of any docs page to make small changes such as a typo, sentence fix, or a broken link. This takes you to the `.md` file where you can make your changes and [create a pull request](#pull-request) for a review. 
+
+ <img src="./assets/images/contribution_cta.png" width="300" height="150" /> 
+
+#### Make changes in a codespace
+
+For more information about using a codespace for working on GitHub documentation, see "[Working in a codespace](https://github.com/github/docs/blob/main/contributing/codespace.md)."
+
+#### Make changes locally
+
+1. [Install Git LFS](https://docs.github.com/en/github/managing-large-files/versioning-large-files/installing-git-large-file-storage).
+
+2. Fork the repository.
+- Using GitHub Desktop:
+  - [Getting started with GitHub Desktop](https://docs.github.com/en/desktop/installing-and-configuring-github-desktop/getting-started-with-github-desktop) will guide you through setting up Desktop.
+  - Once Desktop is set up, you can use it to [fork the repo](https://docs.github.com/en/desktop/contributing-and-collaborating-using-github-desktop/cloning-and-forking-repositories-from-github-desktop)!
+
+- Using the command line:
+  - [Fork the repo](https://docs.github.com/en/github/getting-started-with-github/fork-a-repo#fork-an-example-repository) so that you can make your changes without affecting the original project until you're ready to merge them.
+
+3. Install or update to **Node.js v16**. For more information, see [the development guide](contributing/development.md).
+
+4. Create a working branch and start with your changes!
+
+### Commit your update
+
+Commit the changes once you are happy with them. See [Atom's contributing guide](https://github.com/atom/atom/blob/master/CONTRIBUTING.md#git-commit-messages) to know how to use emoji for commit messages.
+
+Once your changes are ready, don't forget to [self-review](/contributing/self-review.md) to speed up the review process:zap:.
+
+### Pull Request
+
+When you're finished with the changes, create a pull request, also known as a PR.
+- Fill the "Ready for review" template so that we can review your PR. This template helps reviewers understand your changes as well as the purpose of your pull request. 
+- Don't forget to [link PR to issue](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue) if you are solving one.
+- Enable the checkbox to [allow maintainer edits](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/allowing-changes-to-a-pull-request-branch-created-from-a-fork) so the branch can be updated for a merge.
+Once you submit your PR, a Docs team member will review your proposal. We may ask questions or request for additional information.
+- We may ask for changes to be made before a PR can be merged, either using [suggested changes](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/incorporating-feedback-in-your-pull-request) or pull request comments. You can apply suggested changes directly through the UI. You can make any other changes in your fork, then commit them to your branch.
+- As you update your PR and apply changes, mark each conversation as [resolved](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/commenting-on-a-pull-request#resolving-conversations).
+- If you run into any merge issues, checkout this [git tutorial](https://github.com/skills/resolve-merge-conflicts) to help you resolve merge conflicts and other issues.
+
+### Your PR is merged!
+
+Congratulations :tada::tada: The GitHub team thanks you :sparkles:. 
+
+Once your PR is merged, your contributions will be publicly visible on the [GitHubs docs](https://docs.github.com/en). 
+
+Now that you are part of the GitHub docs community, see how else you can [contribute to the docs](/contributing/types-of-contributions.md).
+
+## Windows
+
+This site can be developed on Windows, however a few potential gotchas need to be kept in mind:
+
+1. Regular Expressions: Windows uses `\r\n` for line endings, while Unix based systems use `\n`. Therefore when working on Regular Expressions, use `\r?\n` instead of `\n` in order to support both environments. The Node.js [`os.EOL`](https://nodejs.org/api/os.html#os_os_eol) property can be used to get an OS-specific end-of-line marker.
+2. Paths: Windows systems use `\` for the path separator, which would be returned by `path.join` and others. You could use `path.posix`, `path.posix.join` etc and the [slash](https://ghub.io/slash) module, if you need forward slashes - like for constructing URLs - or ensure your code works with either.
+3. Bash: Not every Windows developer has a terminal that fully supports Bash, so it's generally preferred to write [scripts](/script) in JavaScript instead of Bash.
+4. Filename too long error: There is a 260 character limit for a filename when Git is compiled with `msys`. While the suggestions below are not guaranteed to work and could possibly cause other issues, a few workarounds include:
+    - Update Git configuration: `git config --system core.longpaths true`
+    - Consider using a different Git client on Windows