rename "master" to "main"

Author: brianamarie

README.md

@@ -14,9 +14,9 @@ For more information on the goals of this course, check out the [`course-details
 
 ## Contribute
 
-See something we could improve? Check out the contributing guide in the [community contributors repository](https://github.com/githubtraining/community-contributors/blob/master/CONTRIBUTING.md) for more information on the types of contributions we :heart: and instructions.
+See something we could improve? Check out the contributing guide in the [community contributors repository](https://github.com/githubtraining/community-contributors/blob/main/CONTRIBUTING.md) for more information on the types of contributions we :heart: and instructions.
 
-We :heart: our community and take great care to ensure it is fun, safe and rewarding. Please review our [Code of Conduct](https://github.com/githubtraining/community-contributors/blob/master/CODE_OF_CONDUCT.md) for community expectations and guidelines for reporting concerns.
+We :heart: our community and take great care to ensure it is fun, safe and rewarding. Please review our [Code of Conduct](https://github.com/githubtraining/community-contributors/blob/main/CODE_OF_CONDUCT.md) for community expectations and guidelines for reporting concerns.
 
 ## License
 

responses/01a_class-introduction-issue.md

@@ -28,15 +28,15 @@ This project is centered around a memory game that will be deployed with GitHub
 1. Click the [**Settings**]({{ repoUrl }}/settings) tab in your repository.
 1. Scroll down until you see **Data services**.
 1. Under **Data services**, click the check boxes to enable all the data services.
-1. Scroll down to **GitHub Pages** and select `master` as a **Source**.
+1. Scroll down to **GitHub Pages** and select `main` as a **Source**.
 
 {% else %}
 
 ### :keyboard: Activity: Enable GitHub Pages
 
 
 1. Click the [**Settings**]({{ repoUrl }}/settings) tab in your repository.
-1. Scroll down to **GitHub Pages** and select `master` as a **Source**.
+1. Scroll down to **GitHub Pages** and select `main` as a **Source**.
 
 {% endif %}
 

responses/ja/01a_class-introduction-issue.md

@@ -28,15 +28,15 @@
 1. リポジトリの[**Settings**]({{ repoUrl }}/settings)タブをクリック
 1. **Data services**のセクションまで画面をスクロール
 1. **Data services**セクションにて、全てのデータサービスにチェックを入れて有効化
-1. **GitHub Pages**のセクションまで画面をスクロールし、**Source**として`master`を選択し、**Save**をクリック
+1. **GitHub Pages**のセクションまで画面をスクロールし、**Source**として`main`を選択し、**Save**をクリック
 
 {% else %}
 
 ### :keyboard: やってみよう：GitHub Pagesの有効化
 
 
 1. リポジトリの[**Settings**]({{ repoUrl }}/settings)タブをクリック
-1. **GitHub Pages**のセクションまで画面をスクロールし、**Source**として`master`を選択し、**Save**をクリック
+1. **GitHub Pages**のセクションまで画面をスクロールし、**Source**として`main`を選択し、**Save**をクリック
 
 {% endif %}