docs: add section for updating vs code

doc/CONTRIBUTING.md

@@ -2,9 +2,11 @@
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 # Contributing
 
+- [Contributing](#contributing)
   - [Pull Requests](#pull-requests)
   - [Requirements](#requirements)
   - [Development Workflow](#development-workflow)
+    - [Updating VS Code](#updating-vs-code)
   - [Build](#build)
   - [Structure](#structure)
     - [Modifications to VS Code](#modifications-to-vs-code)
@@ -55,6 +57,15 @@ To develop inside an isolated Docker container:
 
 `yarn watch` will live reload changes to the source.
 
+### Updating VS Code
+
+If you need to update VS Code, you can update the subtree with one line. Here's an example using the version 1.52.1
+
+```shell
+git subtree pull --prefix lib/vscode vscode release/1.52 --squash --message "Update VS Code to 1.52.1"
+```
+
+
 ## Build
 
 You can build using: