Update images_manager.py

Signed-off-by: Antonio <vozaanthony@gmail.com>

podman/domain/images_manager.py

@@ -56,7 +56,7 @@ def list(self, **kwargs) -> List[Image]:
                 Available filters:
 
                 - dangling (bool)
-                - label (Union[str, List[str]]): format either "key" or "key=value"
+                - label (Union[str, List[str]]): format either "key" or "key=value
 
         Raises:
             APIError: when service returns an error