link GNU Coding Standards and Information for Maintainers of GNU Software
Add links to compatible and relevant rules in GNU.
Thanks to Félicien Pillot for bringing this idea and finding some matching rules:
https://lists.globalcode.info/mailman3/hyperkitty/list/sane-software@lists.globalcode.info/thread/LVFFEQREQ2LBZGWVJIFTZE2QV3AGF5RO/