docs: improve doc-writing guide with video and clearer heading (#8424)

* docs: update first section title to avoid redundancy

Changed the first section title from 'Automating Documentation Updates with Continue CLI' to 'Getting Started' to avoid redundancy with the page title.

Generated with [Continue](https://continue.dev)

Co-Authored-By: Continue <[email protected]>
Co-authored-by: bdougieyo <[email protected]>

* docs: add YouTube video embed to doc writing agent CLI guide

Add embedded video (https://www.youtube.com/watch?v=rJ2taa8OLvY) above the Getting Started section to provide visual walkthrough of automating documentation updates with Continue CLI.

Generated with [Continue](https://continue.dev)

Co-Authored-By: Continue <[email protected]>

---------

Co-authored-by: Continue Agent <[email protected]>
Co-authored-by: Continue <[email protected]>
Co-authored-by: bdougieyo <[email protected]>
Co-authored-by: Brian 'bdougie' Douglas <[email protected]>

Author: 4 people

docs/guides/doc-writing-agent-cli.mdx

@@ -3,7 +3,18 @@ title: "Automating Documentation Updates with Continue CLI"
 sidebarTitle: "Automating Documentation Updates with Continue CLI"
 description: "Learn how to create automated documentation generation workflows using Continue CLI. Set up AI agents to analyze code changes and generate or update documentation automatically in GitHub workflows or local development."
 ---
-# Automating Documentation Updates with Continue CLI
+
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube.com/embed/rJ2taa8OLvY"
+  title="YouTube video player"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen
+></iframe>
+
+# Getting Started
 
 This guide demonstrates how to create automated documentation generation based on code updates in a git branch using the Continue CLI, either as part of your local workflow or as part of a GitHub workflow.