fix(docs): reorder Coder Agents section in manifest.json (#22604) (#22614)

## Changes

- Removed the Coder Agents entry from the middle of the children array
in `docs/manifest.json`.
- Added the Coder Agents entry back at the end of the children array to
improve the organization of the documentation structure.

<img width="368" height="688" alt="image"
src="https://github.com/user-attachments/assets/3117acfd-8c8a-4522-84e7-a748a7596cc6"
/>


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docs/manifest.json

@@ -956,11 +956,6 @@
 			"path": "./ai-coder/index.md",
 			"icon_path": "./images/icons/wand.svg",
 			"children": [
-				{
-					"title": "Coder Agents",
-					"description": "Self-hosted agent by Coder",
-					"path": "./ai-coder/agents.md"
-				},
 				{
 					"title": "Best Practices",
 					"description": "Best Practices running Coding Agents",
@@ -1186,6 +1181,11 @@
 					"description": "Connect to agents Coder with a MCP server",
 					"path": "./ai-coder/mcp-server.md",
 					"state": ["beta"]
+				},
+				{
+					"title": "Coder Agents",
+					"description": "Self-hosted agent by Coder",
+					"path": "./ai-coder/agents.md"
 				}
 			]
 		},