edit docstring"

Author: roggenkemper

src/sentry/tasks/clear_expired_resolutions.py

@@ -20,7 +20,7 @@ def clear_expired_resolutions(release_id):
     the system that any pending resolutions older than the given release can now
     be safely transitioned to resolved.
 
-    This is currently only used for ``in_next_release`` resolutions.
+    This is currently only used for ``in_next_release`` and ``in_upcoming_release`` resolutions.
     """
     try:
         release = Release.objects.get(id=release_id)