fix(mkdocs): rebase cross-kind wiki links under directory URLs

Wiki pages linking to a sibling kind (for example ../lib/...) were emitted verbatim by MkDocs and, with use_directory_urls, resolved into a non-existent <kind>/<kind>/ path. Add a docforge-linkfix plugin (doc-forge 0.0.8) that rebases those links to the repository root.

docforge/templates/mkdocs.wiki.yml

@@ -22,4 +22,5 @@ theme:
     logo: material/database
     repo: fontawesome/brands/github
 plugins:
-  - search
+  - search
+  - docforge-linkfix