It's a good point. This is why for C the references are to a specific standard, i.e. C11. For D, I use named links, which we try to not change. The bugzilla numbers do not change, which is a feature of bugzilla.

Even so, the utility of the links far outweighs the possibility of needing to adjust them.

P.S. I've found using links to Microsoft documentation to be extremely frustrating, because not only does Microsoft move them around all the time, but will wholesale permanently delete vast swaths of reference material.

Notice that the github links are to line numbers. Line numbers are ephemeral, I don't know a way around that.