Add missing ref

grott-current/config.yaml

@@ -1,6 +1,7 @@
+---
 name: grott
 version: b6f2f24
-slug: grott
+slug: grott-edge
 description: The Growatt inverter monitor with current HA plugin integrated
 url: https://github.com/egguy/addon-grott
 arch:
@@ -23,7 +24,7 @@ options:
   gmode: proxy
   grott_mqtt: false
   ginvtype: default
-  ginvtypemap: ''
+  ginvtypemap: ""
   retain: false
   verbose: false
   ha_plugin: true