Merge pull request hashicorp#106 from modular-magician/codegen-pr-496

Magic Modules changes.

website/docs/r/redis_instance.html.markdown

@@ -105,6 +105,8 @@ The following arguments are supported:
 * `redis_configs` -
   (Optional)
   Redis configuration parameters, according to http://redis.io/topics/config.
+  Currently, the only supported parameters are maxmemory-policy and notify-keyspace-events
+  (https://cloud.google.com/memorystore/docs/redis/reference/rest/v1/projects.locations.instances#Instance.FIELDS.redis_configs).
 
 * `location_id` -
   (Optional)