fix: correct command usage and update argument documentation in enforcement command

Author: BryanttV

openedx_authz/management/commands/enforcement.py

@@ -13,7 +13,7 @@
 - Display of loaded policies, role assignments, and action grouping rules
 
 Example usage:
-    python manage.py lms enforcement --policy-file-path /path/to/authz.policy
+    python manage.py enforcement --policy-file-path /path/to/authz.policy
 
 Example test input:
     user:alice act:read org:OpenedX
@@ -63,7 +63,7 @@ def handle(self, *args, **options):
 
         Args:
             *args: Positional command arguments (unused).
-            **options: Command options including 'policy_file_path'.
+            **options: Command options including `policy_file_path`.
 
         Raises:
             CommandError: If model or policy files are not found or enforcer creation fails.