fix: incorrect endpoint in rename tags operation

[Zlendy]

fixes #867

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.41%. Comparing base (595cb45) to head (7cf6870).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #868      +/-   ##
==========================================
+ Coverage   25.58%   27.41%   +1.82%     
==========================================
  Files          47       47              
  Lines        5628     4166    -1462     
==========================================
- Hits         1440     1142     -298     
+ Misses       3989     2825    -1164     
  Partials      199      199              

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[fmartingr]

Thank you for noticing this @Zlendy! It seems I made a typo when migrating the legacy routes from the old handlers, the old API used a mix of /api/tag and /api/tags.... Anyway, let me merge this so we can cut a patch release this week with some fixes :)