[5.0.x] Fixed typo in docs/releases/5.0.txt.

Backport of 909f8e4c24e5c0c2fcf3f6bab2f87c0735bcc832 from main

docs/releases/5.0.txt

@@ -448,7 +448,7 @@ backends.
   ``False`` if the database doesn't support the ``DEFAULT`` keyword in
   ``INSERT`` queries.
 
-* ``DatabaseFeatures.supports_default_keyword_in_bulk insert`` should be set to
+* ``DatabaseFeatures.supports_default_keyword_in_bulk_insert`` should be set to
   ``False`` if the database doesn't support the ``DEFAULT`` keyword in bulk
   ``INSERT`` queries.