fix button title

src/app/bc-info/bc-info.component.html

@@ -13,7 +13,7 @@ Data URL: {{bcInfoService.dataUrl}} -->
             <p>Asset: {{assetId}}</p>
             <p>Balance: {{userBalance}}</p>
         </span>
-        <button type="button" class="btn btn-primary" (click)="onChooseArea()"> "Confirm area" : "Choose Area"}}</button>        
+        <button type="button" class="btn btn-primary" (click)="onChooseArea()">Confirm area</button>        
         <p>Extent: {{extent}}</p>
         <p>Price: {{price}}</p>
     </div>