Update documentation

Author: ellmetha

docs/release_notes/v1.1.2.rst

@@ -12,4 +12,5 @@ Minor changes
 
 * Fix possible inconsistency in permissions handling for permissions targetting all authenticated
   users (`#194 <https://github.com/ellmetha/django-machina/pull/194>`_)
+* Fix unexpected "Attachments" tab link displayed in the topic form when the associated permission is not granted
 * Bootstrap version is upgraded to 4.5.2