fix: fix how line anchor and file url generated.

[GdoongMathew]

Summary

Since RepoUrlContext already determine the type of an repo, line anchor and file path generation should directly refer to that source instead.

[greptile-apps]

Greptile Summary

The PR makes repository file URLs and line anchors use the repository type already established by RepoUrlContext, rather than inferring the hosting provider from the URL hostname.

• Generates GitHub, GitLab, and Bitbucket file URLs from ctx.type.
• Generates provider-specific line anchors from the same repository type.
• Preserves bare paths for local repositories, missing URLs, and unknown types.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
api/services/wiki/content.py	Replaces hostname parsing with the validated repository-type contract for file URL and line-anchor generation; no eligible follow-up defect remains.

_{Reviews (2): Last reviewed commit: "fix: fix how line anchor and file url ge..." | Re-trigger Greptile}