meta(crons): Update environment length comment (#53448)

Author: rjo100

src/sentry/models/environment.py

@@ -53,7 +53,7 @@ class Meta:
     def is_valid_name(cls, value):
         """Limit length and reject problematic bytes
 
-        If you change the rules here also update the event ingestion schema in Relay.
+        If you change the rules here also update the event + monitor check-in ingestion schema in Relay.
         """
         if len(value) > ENVIRONMENT_NAME_MAX_LENGTH:
             return False