Update ai/agent.mdx

Co-Authored-By: mintlify-development[bot] <109878554+mintlify-development[bot]@users.noreply.github.com>

Author: yangleyland

ai/agent.mdx

@@ -54,7 +54,12 @@ Use the agent in Slack to collaborate with your team on documentation updates.
 
 ## Connect repositories as context
 
-The agent can only access repositories that you connect through the Mintlify GitHub App. Configure which repositories the agent can access in the agent panel **Settings** or in the [GitHub App settings](https://github.com/apps/mintlify/installations/new).
+The agent can only access repositories that you connect through the Mintlify GitHub App. Configure which repositories the agent can access:
+
+1. Open the agent panel using <kbd>⌘</kbd>+<kbd>I</kbd> (macOS) or <kbd>Ctrl</kbd>+<kbd>I</kbd> (Windows/Linux).
+2. Click the **Settings** icon (gear icon) in the panel header.
+3. In the "Set up external sources" section, click **Configure** to manage repository access.
+4. Alternatively, configure repositories directly in the [GitHub App settings](https://github.com/apps/mintlify/installations/new).
 
 ## Embed the agent via API