website/integrations: Update gitea integration documentation

[Holi0317]

Newer gitea versions now expose "additional OIDC mapping" to admin GUI.
The configuration file change required in previous versions can now be
done in the GUI.

Details

• Does this resolve an issue?

No

Changes

Minor update on integration documentation for gitea. They now provide additional OIDC scope when configuring authentication source in the admin GUI. This PR replaces the instruction on editing gitea configuration file with typing correct value in the GUI.

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[codecov]

Codecov Report

Merging #2182 (8c2cb15) into master (b5b5a9e) will decrease coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2182      +/-   ##
==========================================
- Coverage   91.59%   91.48%   -0.11%     
==========================================
  Files         447      447              
  Lines       19474    19474              
==========================================
- Hits        17836    17813      -23     
- Misses       1638     1661      +23     

Impacted Files	Coverage Δ
authentik/events/models.py	75.58% <0.00%> (-7.25%)	⬇️
authentik/events/tasks.py	85.34% <0.00%> (-4.00%)	⬇️
authentik/stages/email/tasks.py	86.45% <0.00%> (-1.69%)	⬇️

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[BeryJu]

Cheers for the PR, I'd like to wait until Gitea 1.16 is actually released before we merge and ship this

[Holi0317]

Sure. I just realized I was in gitea rc after opening this pr :)

[roland-5]

Gitea 1.6 was released.