In the wiki, it would be nice to automatically turn text like "FS#2222" into a link to https://bugs.openwrt.org/index.php?do=details&task_id=2222
It could also be useful for other types of link: git commit, bug reports on github, etc. But it's harder because there is no simple way to know what the reference is about (e.g. "#4242" for a github ticket or PR: for which project? LuCI, package feed?)
For links to github, we could introduce a new notation like "luci#4242", but it doesn't seem like it would be used a lot if nobody knows about it.