web/admin: fix broken link

[egor-tensin]

I think those links are broken?

[codecov]

Codecov Report

Merging #2940 (5f8d4aa) into master (61a876b) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2940      +/-   ##
==========================================
- Coverage   91.78%   91.77%   -0.00%     
==========================================
  Files         460      460              
  Lines       20332    20332              
==========================================
- Hits        18660    18658       -2     
- Misses       1672     1674       +2     

Impacted Files	Coverage Δ
authentik/core/api/sources.py	80.27% <0.00%> (-2.63%)	⬇️

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