perf: text i18n (PanJiaChen#2739)

Author: Phạm Ngọc Hòa

src/views/excel/export-excel.vue

@@ -13,7 +13,7 @@
       </a>
     </div>
 
-    <el-table v-loading="listLoading" :data="list" element-loading-text="拼命加载中" border fit highlight-current-row>
+    <el-table v-loading="listLoading" :data="list" element-loading-text="Loading..." border fit highlight-current-row>
       <el-table-column align="center" label="Id" width="95">
         <template slot-scope="scope">
           {{ scope.$index }}