Add GitHub Repos Documentation

[timuthy]

How to categorize this PR?

/kind enhancement

What this PR does / why we need it:
Adds GitHub repo documentation in the Gardener org.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
/cc @oliver-goetz @marc1404

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[coderabbitai]

Important

Review skipped

Review was skipped due to path filters

⛔ Files ignored due to path filters (1)

• hugo/content/contribute/contribution-process/github-repositories.md is excluded by !hugo/content/**

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[github-actions]

Sitemap structure diff vs master

	count
➕ added pages	1
➖ removed pages	0

First entries (full diff in the run summary & artifact):

ADDED   (1):
  + https://gardener.cloud/contribute/contribution-process/github-repositories/
REMOVED (0):
  (none)

A rename appears as one removed (old path) + one added (new path).

[BoHristova]

Fantastic! Thank you, @timuthy :)

Could you move the guide to the Contribution Process section? The Documentation section is focused on how to contribute to the Gardener documentation.

[marc1404]

Thanks for documenting the new repository management through Peribolos!
Nothing to add besides @BoHristova's comments

[timuthy]

Thanks a lot for your reviews @BoHristova and @marc1404. I've addressed your feedback, PTAL 🙂

[BoHristova]

Thanks, @timuthy! It looks great. I made one more small change, I hope that's OK with you.

/lgtm

[gardener-prow]

LGTM label has been added.

Details

Git tree hash: 282df5023ebf3a1e3bc563e08f2d3bb111821531

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BoHristova

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