chore: update documentation [skip ci]

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

src/code-server/README.md

@@ -53,4 +53,4 @@ VS Code in the browser ([code-server](https://github.com/coder/code-server))
 
 ---
 
-_Note: This file was auto-generated from the [devcontainer-feature.json](devcontainer-feature.json).  Add additional notes to a `NOTES.md`._
+_Note: This file was auto-generated from the [devcontainer-feature.json](https://github.com/coder/devcontainer-features/blob/main/src/code-server/devcontainer-feature.json).  Add additional notes to a `NOTES.md`._