Added sensitive information bit

[fcerpe]

I added a few phrases about posting sensitive information.
I'm also trying the PR from gitkraken, just to spice it up

Summary by Sourcery

Update the contributing documentation to include guidelines on handling sensitive information, emphasizing the importance of not including sensitive data directly in the public guide.

Documentation:

• Add guidelines to the contributing documentation about handling sensitive information, advising contributors to avoid including sensitive data directly in the guide and suggesting alternatives.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds a new paragraph to the contributing.md file, providing guidance on handling sensitive information in the publicly accessible guide.

File-Level Changes

Change	Details	Files
Added a paragraph about handling sensitive information	Introduced a warning about the public accessibility of the guide Suggested creating a private password-protected document for sensitive information Advised contacting maintainers if unsure about how to proceed	doc/contributing.md

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[sourcery-ai]

Hey @fcerpe - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider rewording the added paragraph for clarity and conciseness. Break it into shorter, more direct sentences about the steps to take with sensitive information.
• There's a typo in 'participants codes'. It should be 'participants' codes'.
• Please remove the comment about GitKraken from the PR description, as it's not relevant to the changes made.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟡 Documentation: 1 issue found

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[sourcery-ai]

suggestion (documentation): Clarify the phrase 'If you're unsure about what to do or how to do'

Consider rephrasing to 'If you're unsure about what to do or how to proceed' for better clarity.

Suggested change

	Before making any modification, remember that this guide is publicly accessible by anyone. If you want to add any potentially sensitive information (e.g. participants codes, passwords of shared accounts), consider making a private password-protected document that can be linked via the lab guide. If you're unsure about what to do or how to do, get in touch with the maintainers of the guide.
	Before making any modification, remember that this guide is publicly accessible by anyone. If you want to add any potentially sensitive information (e.g. participants codes, passwords of shared accounts), consider making a private password-protected document that can be linked via the lab guide. If you're unsure about what to do or how to proceed, get in touch with the maintainers of the guide.

[marcobarilari]

LGTM, feel free to merge