The automation state trigger has deprecated its state alias (#2758)

The "state" used to be an alias for "to" but this was deprecated to make the
meaning more clear.

This commit updates the examples to no longer use the deprecated name.

source/_docs/automation/examples.markdown

@@ -26,7 +26,7 @@ automation:
         offset: '-01:00:00'
       - platform: state
         entity_id: group.all_devices
-        state: 'home'
+        to: 'home'
     condition:
       # Prefix the first line of each condition configuration
       # with a '-'' to enter multiple
@@ -45,7 +45,7 @@ automation:
     trigger:
       platform: state
       entity_id: group.all_devices
-      state: 'not_home'
+      to: 'not_home'
     action:
       service: light.turn_off
       entity_id: group.all_lights