docs: update developing.md (#11377)

The commit updates the Node version documented in the "Building on Windows" section so that it aligns with the version range specified in the prerequisites. Previously when the minimally supported Node version was updated we forgot to also update the Windows docs.

Author: fipro78

doc/Developing.md

@@ -509,7 +509,7 @@ etc.) by opening `packages/<package name>/coverage/index.html`.
 
  - Install [`scoop`](https://github.com/lukesampson/scoop#installation).
  - Install [`nvm`](https://github.com/coreybutler/nvm-windows) with scoop: `scoop install nvm`.
- - Install Node.js with `nvm`: `nvm install 12.14.1`, then use it: `nvm use 12.14.1`. You can list all available Node.js versions with `nvm list available` if you want to pick another version.
+ - Install Node.js with `nvm`: `nvm install 16.15.1`, then use it: `nvm use 16.15.1`. You can list all available Node.js versions with `nvm list available` if you want to pick another version.
  - Install `yarn`: `scoop install yarn`.
  - If you need to install `windows-build-tools`, see [`Installing Windows Build Tools`](#installing-windows-build-tools).
  - If you run into problems with installing the required build tools, the `node-gyp` documentation offers a useful [guide](https://github.com/nodejs/node-gyp#on-windows) how to install the dependencies manually. The versions required for building Theia are: