Fixed typo in django/core/files/storage/base.py docstring.

Author: Multimabo

django/core/files/storage/base.py

@@ -37,7 +37,7 @@ def save(self, name, content, max_length=None):
         # Ensure that the name is valid, before and after having the storage
         # system potentially modifying the name. This duplicates the check made
         # inside `get_available_name` but it's necessary for those cases where
-        # `get_available_name` is overriden and validation is lost.
+        # `get_available_name` is overridden and validation is lost.
         validate_file_name(name, allow_relative_path=True)
 
         # Potentially find a different name depending on storage constraints.