Update src/licensedcode/detection.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: adityashirsatrao007

src/licensedcode/detection.py

@@ -1994,7 +1994,7 @@ def find_referenced_resource(referenced_filename, resource, codebase, **kwargs):
             # Optimization: If we could limit walk to a subtree it would be better
             # For now we walk all as a safe default
             for res in codebase.walk(topdown=True):
-                if fnmatch(res.path, pattern):
+                if fnmatch(res.path, pattern) and not res.is_dir:
                     if res.path not in seen_paths:
                         matches.append(res)
                         seen_paths.add(res.path)