Redirect /tmir to Transistor instead of Spotify

[vcarl]

We changed hosts earlier this year, Transistor is way better

[what-the-diff]

PR Summary

• Redirect Destination Update for "/tmir"
  The link that users are taken to when they type in "/tmir" has been changed. Previously, it directed users to a page on creators.spotify.com/pod/profile/reactiflux/. We've now updated it to take them to tmir.transistor.fm instead.

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