fix defaultSettings.js path

when defaultSettings.js path click, return a error path, I turn it to the right path

Author: zkwolf

src/components/setting/SettingDrawer.vue

@@ -154,7 +154,7 @@
           <a-alert type="warning" :style="{ marginTop: '24px' }">
             <span slot="message">
               配置栏只在开发环境用于预览，生产环境不会展现，请手动修改配置文件
-              <a href="https://github.com/sendya/ant-design-pro-vue/blob/master/src/defaultSettings.js" target="_blank">src/defaultSettings.js</a>
+              <a href="https://github.com/sendya/ant-design-pro-vue/blob/master/src/config/defaultSettings.js" target="_blank">src/config/defaultSettings.js</a>
             </span>
           </a-alert>
         </div>