demo(radio/chooseOne): fix ng-value being written wrong

Author: Ionitron

demos/directive/radio/chooseOne/index.html

@@ -9,9 +9,9 @@ <h1 class="title">Radios</h1>
   <h1>
     Your Choice: <span class="assertive">{{choice}}</span> 
   </h1>
-  <ion-radio ng-model="choice" ng-value="one">One</ion-radio>
-  <ion-radio ng-model="choice" ng-value="two">Two</ion-radio>
-  <ion-radio ng-model="choice" ng-value="three">Three</ion-radio>
-  <ion-radio ng-model="choice" ng-value="four">Four</ion-radio>
-  <ion-radio ng-model="choice" ng-value="five">Five</ion-radio>
+  <ion-radio ng-model="choice" value="one">One</ion-radio>
+  <ion-radio ng-model="choice" value="two">Two</ion-radio>
+  <ion-radio ng-model="choice" ng-value="'three'">Three</ion-radio>
+  <ion-radio ng-model="choice" ng-value="'four'">Four</ion-radio>
+  <ion-radio ng-model="choice" value="five">Five</ion-radio>
 </ion-content>