I think there's more to do here, and I'll continue to add to & update this documentation as I go through the process of upgrading node in the context of the GN build.
Updates the node upgrade doc to take path changes into account as well as to incorporate the new `get-patch` script which simplifies work significantly.
* Fix URLs and Paths in docs/
* Avoiding link break to /docs/development/updgrading-chrome.md
* Fix URLs and Paths in docs/ #2
* Removed double spaces in docs