chore(docs): Remove version number from npm docs link

CONTRIBUTING.md

@@ -33,4 +33,4 @@ Publish the new version with [vsce](https://github.com/microsoft/vscode-vsce):
 npx @vscode/vsce@latest publish
 ```
 
-See [npm version docs](https://docs.npmjs.com/cli/v8/commands/npm-version) for all available arguments.
+See [npm version docs](https://docs.npmjs.com/cli/commands/npm-version) for all available arguments.