Fix dead link issue#2044

[theGiallo]

Fix dead link issue vispy#2044

[kmuehlbauer]

@theGiallo Thanks for taking care of this. To actually advertise these changes to "vispy" repository you would need to point the PullRequest to https://github.com/vispy/vispy not your fork. Same applies to the other PullRequest. Thanks again!

I tried to switch the base but was not successful. If you encounter problems when trying to switch you also might just open the PR newly at: https://github.com/vispy/vispy/compare, select `compare across forks" and then chosse your fork/branch.

If this doesn't work, let me know. I'll then fetch your commit(s) and create a PR from my side keeping your authoring intact.

[theGiallo]

Oh, yes. I don't really know what this PR I did is for. I did it from a smartphone :D I just did another across forks vispy#2050

Thank you for the time you took to explain.

[kmuehlbauer]

No worries, you are welcome. The PR's look good now.