rustdoc: Fix duplicated item path (#13013)

This PR fixes a bug that was introduced in #13011 where the item path
would get duplicated twice in the database key.

Release Notes:

- N/A
e0c1ab650eMarshall Bowers committed on 6/13/2024, 10:21:52 PM· committed by GitHubparent407188f
1 file changedLine totals unavailable