Fix invalid yaml (#2546)

Author: brantlk

docs/documenting/yaml-style-guide.md

@@ -227,16 +227,16 @@ list `[]` by default.
 ```yaml
 # Good
 - alias: "Test"
-    triggers:
-      -  trigger: state
-         entity_id: binary_sensor.motion
+  triggers:
+    - trigger: state
+      entity_id: binary_sensor.motion
 
 # Bad
 - alias: "Test"
-    triggers:
-      -  trigger: state
-         entity_id: binary_sensor.motion
-    condition: []
+  triggers:
+    - trigger: state
+      entity_id: binary_sensor.motion
+  condition: []
 ```
 
 ### Strings (continued)
@@ -311,8 +311,8 @@ actions:
   - action: light.turn_on
     entity_id: light.living_room
   - action: light.turn_on
-     data:
-       entity_id: light.living_room
+    data:
+      entity_id: light.living_room
 ```
 
 ### Properties that accept a scalar or a list of scalars