hugolib: Fix bundle path when slug is set

Fixes #4870

resources/page/page_paths.go

@@ -221,6 +221,8 @@ func CreateTargetPaths(d TargetPathDescriptor) (tp TargetPaths) {
 
 		link = pagePath
 
+		// TODO(bep) this should not happen after the fix in https://github.com/gohugoio/hugo/issues/4870
+		// but we may need some more testing before we can remove it.
 		if baseNameSameAsType {
 			link = strings.TrimSuffix(link, d.BaseName)
 		}