refactor(money-detail):调整导出按钮布局并居中

调整充值明细页面的导出按钮布局，使其在中心对齐，改善页面布局效果。此调整涉及使用`el-row`和`el-col`组件对导出按钮进行重新排布，并确保其在页面上水平居中。

src/views/money/detail/index.vue

@@ -2,17 +2,21 @@
   <div style="padding: 20px;">
     <h1 style="text-align: center; margin-bottom: 30px;">充值明细</h1>
     <el-divider></el-divider>
-    <el-col :span="1.5">
-      <el-button
-        v-hasPermi="['system:pay:export']"
-        icon="el-icon-download"
-        plain
-        size="mini"
-        type="warning"
-        @click="handleExport"
-      >导出
-      </el-button>
-    </el-col>
+    <el-row>
+      <el-col :span="50"></el-col>
+      <el-col :span="5" :offset="15">
+        <el-button
+          v-hasPermi="['system:pay:export']"
+          icon="el-icon-download"
+          plain
+          size="mini"
+          type="warning"
+          @click="handleExport"
+        >导出
+        </el-button>
+      </el-col>
+    </el-row>
+
     <el-table
       :data="listDate"
       style="width: 100%; border-collapse: collapse;">
@@ -98,7 +102,8 @@ export default {
           this.listDate = response.data.rows;
           this.total = response.data.total;
         }
-      );}
+      );
+    }
   }
 }
 </script>