解决产品详情页美元价格显示异常问题。

components/store/CommodityInfo.vue

@@ -78,7 +78,7 @@
               <div class="select">
                 <span v-if="fragment.currency == 'RMB'">￥</span>
                 <span v-if="fragment.currency == 'USD'">$</span>
-                <span>{{(fragment.prices.rMBPrice || 0)}}</span>
+                <span>{{(fragment.price || 0)}}</span>
                 <span v-if="fragment.currency == 'RMB'" class="tax"> ( 含税 ) </span>
               </div>
               ＝