docs(contributing): update updating vscode

docs/CONTRIBUTING.md

@@ -2,10 +2,12 @@
 <!-- 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)
+      - [Notes about Changes](#notes-about-changes)
   - [Build](#build)
   - [Structure](#structure)
     - [Modifications to VS Code](#modifications-to-vs-code)
@@ -59,14 +61,17 @@ To develop inside an isolated Docker container:
 
 ### 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:
+To update VS Code, follow these steps:
+1. Run `yarn update:vscode`.
+2. Enter a version. Ex. 1.53
+3. This will open a draft PR for you.
+4. There will be merge conflicts. First commit them.
+   1. We do this because if we don't, it will be impossible to review your PR.
+5. Once they're all fixed, test code-server locally and make sure it all works.
 
-```shell
+#### Notes about Changes
-# Add vscode as a new remote if you haven't already and fetch
-git remote add -f vscode https://github.com/microsoft/vscode.git
 
-git subtree pull --prefix lib/vscode vscode release/1.52 --squash --message "Update VS Code to 1.52"
+- watch out for updates to `lib/vscode/src/vs/code/browser/workbench/workbench.html`. You may need to make changes to `src/browser/pages/vscode.html`
-```
 
 ## Build