Fixed BodyRegexFilter returning re.Match

src/mab/filters/body.py

@@ -190,7 +190,7 @@ class BodyRegexFilter(BodyExistsFilter):
         if not await super().__call__(room, event, client):
             return False
         try:
-            return self._regex.match(event.body) # type: ignore
+            return self._regex.match(event.body) is not None # type: ignore
         except:
             self._logger.error(traceback.format_exc())
             return False