Add landing page categories for get-started doc set (#60069)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jc-clark

content/get-started/accessibility/github-command-palette.md

@@ -6,6 +6,8 @@ versions:
 shortTitle: GitHub Command Palette
 redirect_from:
   - /get-started/using-github/github-command-palette
+category:
+  - Customize your experience
 ---
 
 {% data reusables.command-palette.beta-note %}

content/get-started/accessibility/keyboard-shortcuts.md

@@ -13,6 +13,8 @@ versions:
   fpt: '*'
   ghes: '*'
   ghec: '*'
+category:
+  - Customize your experience
 ---
 ## About keyboard shortcuts
 

content/get-started/accessibility/managing-your-theme-settings.md

@@ -12,6 +12,8 @@ redirect_from:
   - /account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-personal-account-settings/managing-your-theme-settings
   - /account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-user-account-settings/managing-your-theme-settings
 shortTitle: Manage theme settings
+category:
+  - Customize your experience
 ---
 
 For choice and flexibility in how and when you use {% data variables.product.github %}, you can configure theme settings to change how {% data variables.product.github %} looks to you. You can choose from themes that are light or dark, or you can configure {% data variables.product.github %} to follow your system settings.

content/get-started/archiving-your-github-personal-account-and-public-repositories/opting-into-or-out-of-the-github-archive-program-for-your-public-repository.md

@@ -9,6 +9,8 @@ versions:
   fpt: '*'
   ghec: '*'
 shortTitle: GitHub Archive program
+category:
+  - Set up your account on GitHub
 ---
 
 {% data reusables.repositories.about-github-archive-program %} For more information, see [AUTOTITLE](/repositories/archiving-a-github-repository/about-archiving-content-and-data-on-github#about-the-github-archive-program).

content/get-started/archiving-your-github-personal-account-and-public-repositories/requesting-an-archive-of-your-personal-accounts-data.md

@@ -10,6 +10,8 @@ versions:
   fpt: '*'
   ghec: '*'
 shortTitle: Request account archive
+category:
+  - Set up your account on GitHub
 ---
 
 {% data variables.product.github %} stores repository and profile metadata from your personal account's activity. You can export your personal account's data through your account settings on {% data variables.product.prodname_dotcom %} or with the User Migration API.

content/get-started/exploring-projects-on-github/contributing-to-a-project.md

@@ -9,6 +9,8 @@ versions:
   ghec: '*'
 redirect_from:
   - /get-started/quickstart/contributing-to-projects
+category:
+  - Explore and contribute
 ---
 
 Contributing to a project on {% data variables.product.github %} is an essential skill for developers and collaborators working together to achieve shared goals. Whether you're fixing bugs, adding features, or improving documentation, the process of contributing ensures structured and efficient collaboration.

content/get-started/exploring-projects-on-github/contributing-to-open-source.md

@@ -6,6 +6,8 @@ versions:
   ghes: '*'
   ghec: '*'
 shortTitle: Contribute to open source
+category:
+  - Explore and contribute
 ---
 
 In this article, you'll learn how to contribute to an open source project by working through an example. We'll guide you through making a contribution to the `github/docs` repository: familiarizing yourself with the repository, finding an area to contribute, making and submitting a pull request, and working with maintainers to get your changes accepted.

content/get-started/exploring-projects-on-github/finding-ways-to-contribute-to-open-source-on-github.md

@@ -15,6 +15,8 @@ versions:
   fpt: '*'
   ghec: '*'
 shortTitle: Finding open source projects
+category:
+  - Explore and contribute
 ---
 
 Open source software powers much of the technology you use daily, from the web browser on your screen to the [NASA Ingenuity helicopter that flew on Mars](https://github.com/readme/featured/nasa-ingenuity-helicopter).

content/get-started/exploring-projects-on-github/following-organizations.md

@@ -5,6 +5,8 @@ versions:
   fpt: '*'
   ghes: '*'
   ghec: '*'
+category:
+  - Explore and contribute
 ---
 
 {% data reusables.organizations.follow-organizations-beta %}

content/get-started/exploring-projects-on-github/following-people.md

@@ -10,6 +10,8 @@ versions:
   fpt: '*'
   ghes: '*'
   ghec: '*'
+category:
+  - Explore and contribute
 ---
 
 ## About followers