fix(template): Several templates on wrong catagory.

templates/compose/gotify.yaml

@@ -1,6 +1,6 @@
 # documentation: https://gotify.net/docs/install
 # slogan: Gotify is an open-source self-hosted notification server.
-# category: productivity
+# category: messaging
 # tags: productivity,notification,collaboration
 # logo: svgs/gotify.png
 # port: 80
@@ -26,4 +26,4 @@ services:
       interval: 5s
       timeout: 20s
       retries: 10
-    
+