fix annoying typos

synapse/storage/roommember.py

@@ -393,8 +393,8 @@ class RoomMemberStore(SQLBaseStore):
     @cachedInlineCallbacks(num_args=2, cache_context=True)
     def _get_joined_users_from_context(self, room_id, state_group, current_state_ids,
                                        cache_context, event=None):
-        # We don't use `state_group`, its there so that we can cache based
-        # on it. However, its important that its never None, since two current_state's
+        # We don't use `state_group`, it's there so that we can cache based
+        # on it. However, it's important that it's never None, since two current_states
         # with a state_group of None are likely to be different.
         # See bulk_get_push_rules_for_room for how we work around this.
         assert state_group is not None

synapse/storage/state.py

@@ -384,7 +384,7 @@ class StateStore(SQLBaseStore):
                     # We did this before by getting the list of group ids, and
                     # then passing that list to sqlite to get latest event for
                     # each (type, state_key). However, that was terribly slow
-                    # without the right indicies (which we can't add until
+                    # without the right indices (which we can't add until
                     # after we finish deduping state, which requires this func)
                     args = [next_group]
                     if types: