add note in README to use lock file

Author: jtamsut

docs/development.md

@@ -31,6 +31,9 @@ npm i
 npm run build -ws
 ```
 
+**Note**: We have included a `package-lock.json` in `script/workspace`. If packages cannot be installed correctly re-run `script/boostrap` and run `npm ci` to
+get working packages.
+
 ## Make changes
 
 1. Open the workspace in VS Code `File -> Open Workspace from File...`: `/workspaces/vscode-github-actions.code-workspace`
@@ -57,4 +60,4 @@ Launching and debugging the extension should just work. If you need to debug the
 
 ### npm error: "This command does not support workspaces"
 
-Upgrade to a newer version of npm. You can use `npm install npm@latest -g`, `brew upgrade node` or other methods.
+Upgrade to a newer version of npm. You can use `npm install npm@latest -g`, `brew upgrade node` or other methods.