Fix template examples.

README.md

@@ -175,7 +175,7 @@ var:
   toggle_count:
     friendly_name: "Toggle Count"
     initial_value: 0
-    value_template: "{{{ (var.toggle_count | int) + 1 }}}"
+    value_template: "{{ (var.toggle_count | int) + 1 }}"
     entity_id:
       - input_boolean.foo
       - input_boolean.bar
@@ -188,7 +188,7 @@ multiplies variables `y` and `z` whenever `my_custom_event` fires.
 var:
   x:
     friendly_name: 'yz'
-    value_template: "{{{ (var.y | int) * ( var.z | int) }}}"
+    value_template: "{{ (var.y | int) * ( var.z | int) }}"
     event_type: my_custom_event
 ```
 
@@ -298,7 +298,7 @@ adds it to the variable `z`. In this example, `bottle_event` contains an
 var:
   avg_formula_plus_z:
     friendly_name: "Average Formula Plus z"
-    value_template: "{{{ ( avg_formula | float) + ( var.z | float) }}}"
+    value_template: "{{ ( avg_formula | float) + ( var.z | float) }}"
     query: "SELECT COALESCE(SUM(CAST(JSON_EXTRACT(event_data, '$.volume') AS FLOAT))/7.0, 0) AS avg_formula FROM events WHERE event_type = 'bottle_event' AND time_fired BETWEEN DATETIME('now', 'start of day', '-7 days') AND DATETIME('now', 'start of day');"
     column: 'avg_formula'
     tracked_event_type: bottle_event