GitLab Documentation AI Translations Upstream

What does this MR do?

This MR pushes translations from the main-translation branch of our production fork to the upstream GitLab Charts repository.

In also includes a custom markdownlin-cli2.yaml configuration. This is required because the linting rules needed for translated content differs from English.

It includes the AI translations delivered in:

1. gitlab-com/localization/tech-docs-forked-projects/prod/gitlab-chart!16 (merged)
2. gitlab-com/localization/tech-docs-forked-projects/prod/gitlab-chart!17 (merged)

Changes Overview

1. Adds translated content for documentation pages
2. Ensures consistent formatting across all translated files
3. Maintains directory structure alignment with the original English content

Related issues

Related https://gitlab.com/gitlab-com/localization/docs-site-localization/-/issues/269

Author checklist

For general guidance, please follow our Contributing guide.

Required

For anything in this list which will not be completed, please provide a reason in the MR discussion.

• Merge Request Title and Description are up to date, accurate, and descriptive.
• MR targeting the appropriate branch.
• MR has a green pipeline.
• Documentation created/updated.
• Tests added/updated, and test plan for scenarios not covered by automated tests.
• Equivalent MR/issue for omnibus-gitlab opened.

Reviewers checklist

• MR has a green pipeline on https://gitlab.com/gitlab-org/charts/gitlab.
• Consider downstream impact to the Operator, as per evaluating impact from changes to GitLab Chart.