Fix minor error in dynamic load function

Author: nmusolino

scripts/validate_docstrings.py

@@ -267,7 +267,7 @@ def _load_obj(name):
             else:
                 continue
 
-        if 'module' not in locals():
+        if 'obj' not in locals():
             raise ImportError('No module can be imported '
                               'from "{}"'.format(name))