Fix META hints to point to GitHub issue tracker instead of RT

[jonassmedegaard]

This issue tracker is enabled, yet the META hints point to https://rt.cpan.org/Public/Dist/Display.html?Name=Web-MREST

Which is right?

[smithfarm]

@jonassmedegaard both are OK to use, but GitHub issue tracker is easier I guess.

Thanks for the heads-up!

[jonassmedegaard]

great that you are flexible: RT is easier for those without a Gitub account, I believe.