With remotes configured (at least with AzureDevOps) it generates PR links from commit comments that look like:

Merged PR 1234: ...

But if someone is using a localized version, the generated commit can have a different format, e.g.

PR 1234 (...) gemergt.

In this case no link is generated.
It would be nice if any match of PR <number> would be shown as a link or the matching could be customized.