Add detailed billing and usage management sections for GitHub products

Author: Randy Pagels

learn-pr/github/introduction-to-github/includes/2-what-is-github.md

@@ -162,6 +162,4 @@ To learn more about how to create and manage gists, refer to the GitHub document
 
 Every repository on GitHub.com comes equipped with a section for hosting documentation, called a wiki. You can use your repository's wiki to share long-form content about your project, such as how to use it, how you designed it, or its core principles. While a README file quickly tells what your project can do, you can use a wiki to provide additional documentation.
 
-It’s worth a reminder that if your repository is private, only people who have at least read access to your repository will have access to your wiki.
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+It’s worth a reminder that if your repository is private, only people who have at least read access to your repository will have access to your wiki.

learn-pr/github/introduction-to-github/includes/4-collaborative-platform.md

@@ -97,5 +97,3 @@ Each category must have a unique name, emoji pairing, and a detailed description
 1. In your repository, go to the Discussions tab and select **Start discussion**.
 
 That covers a little about how GitHub supports collaborative work. Now let's move to how you can manage notifications, subscribe to threads, and get started with GitHub pages.
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