Fix invalid time pattern for "every hour" example (#18100)

The example for the "every hour" trigger uses an invalid time pattern format - minutes: "/60" - which throws the following error.
 
> Invalid config for [automation]: must be a value between 0 and 59 for dictionary value @ data['minutes']
 
Propose replacing it with - hours: "*"

source/_integrations/openuv.markdown

@@ -148,7 +148,7 @@ automation:
   - alias: "Update OpenUV every hour (24 of 50 calls per day)"
     trigger:
       platform: time_pattern
-      minutes: "/60"
+      hours: "*"
     action:
       service: openuv.update_data
 ```