[docs] Faulty schema

Fixes #231

Author: jamesgpearce

site/demos/04_todo/v3.md

@@ -68,7 +68,7 @@ can only be one of the values of the `TYPES` array:
 +  todos: {
 +    text: {type: 'string'},
 +    done: {type: 'boolean', default: false},
-+    type: {type: 'string', default: 'Home', allow: TYPES},
++    type: {type: 'string', default: 'Home'},
 +  },
 +};
 ```