add info about changing source (#773)

Author: ethanpalm

settings/github.mdx

@@ -6,53 +6,45 @@ icon: "github"
 
 Mintlify uses a GitHub App to automatically sync your documentation with your GitHub repository.
 
-## Installation
+## Installing the GitHub App
 
-Install the Mintlify GitHub App on the GitHub account or organization that owns your docs repository. Installing a GitHub App requires either
-organization ownership or admin permissions in a repository. If you lack the necessary permissions, the repository owner will need to approve the request.
+Install the Mintlify GitHub App on the GitHub account or organization that owns your docs repository. You must have organization ownership or admin permissions in a repository to install the app. If you lack the necessary permissions, the repository owner must approve the installation request.
 
-You can install the Mintlify GitHub App through your [dashboard](https://dashboard.mintlify.com/settings/organization/github-app).
+Install the Mintlify GitHub App through your [dashboard](https://dashboard.mintlify.com/settings/organization/github-app).
 
+<Tip>
 We recommend granting access only to the repository where your docs are hosted.
+</Tip>
 
 <Frame>
-  <img className="h-80" src="/images/github/select-repos.png" />
+  <img className="h-80" alt="Mintlify GitHub App installation page with the 'Only select repositories' option selected." src="/images/github/select-repos.png" />
 </Frame>
 
 ## Permissions
 
 When you install the GitHub app, you will be prompted to grant the following permissions:
 
-- **Read** access to `metadata`
-- **Read** and **write** access to `checks`, `code`, `deployments`, `pull requests`,
-  and `workflows`
+Read permissions:
+* `metadata`: Basic repository information
 
-These permissions are leveraged to provide a seamless experience when managing
-your docs.
-
-When you make a commit to the branch you configured as your docs deployment
-branch, we fetch the contents of the files changed to update your docs. To
-accomplish this we need read access to your `contents`.
-
-When pull requests are created we create a check and preview deployment which is
-why we need write access to `checks` and `deployments`.
-
-Inside the Mintlify web editor, Mintlify works on your behalf to create branches
-and pull requests which is why we need write access to `pull requests` and
-`workflows`.
+Read and write permissions:
+* `checks`: Create status checks on pull requests
+* `code`: Read file changes when you commit to your docs branch
+* `deployments`: Generate preview deployments for pull requests
+* `pull requests`: Create branches and pull requests from the web editor
+* `workflows`: Manage GitHub Actions for docs deployments
 
 <Info>
-  If you are concerned about the write permissions, the GitHub App will only
-  have access to the repos you give it access to _and_ if you have branch
-  protections on it _cannot_ push directly to your branches - it abides by your
-  branch protection rules.
+The app only accesses repositories that you explicitly grant it access to. If you have branch protection rules enabled, the app cannot push directly to protected branches.
 </Info>
 
-## Repositories Installations
+## Managing repository access
+
+When installing our GitHub App, you can grant access to all of your repositories or specific ones. We recommend only granting access to the repositories where your documentation is located. You can modify this selection anytime in your [GitHub app settings](https://github.com/apps/mintlify/installations/new).
+
+## Configuring docs source
 
-When installing our GitHub app, you will be prompted to select all repositories
-or a subset of them. This selection can be changed at any time by going to the
-[GitHub app settings](https://github.com/apps/mintlify/installations/new).
+Change the organization, repository, or branch that your documentation is built from in the [Git Settings](https://dashboard.mintlify.com/settings/deployment/git-settings) section of your dashboard.
 
 ## Troubleshooting