docs(demos): change the dot in item-reorder

demos/item-reorder/main.html

@@ -20,7 +20,7 @@
     <ion-item-group [reorder]="editing" (ionItemReorder)="reorderData($event)">
       <ion-item *ngFor="let song of songs">
         <h2>{{ song.title }}</h2>
-        <p>{{ song.band }} <b>&#183;</b> {{ song.album }}</p>
+        <p>{{ song.band }} • {{ song.album }}</p>
       </ion-item>
     </ion-item-group>
   </ion-list>