[Bug d/106638] docs: bad links to DIPs

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106638

--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Martin Liška from comment #1)
> Should likely lead to something like:
> https://github.com/dlang/DIPs/blob/master/DIPs/accepted/DIP1021.md
Indeed, I'm sure the wiki links were working at one point in time, but the
github repository is the official place where they are kept now.