docs: add job ad

Author: PanJiaChen

src/views/documentation/index.vue

@@ -16,6 +16,11 @@
       href="https://panjiachen.gitee.io/vue-element-admin-site/zh/"
     >国内文档</a>
     <dropdown-menu :items="articleList" style="float:left;margin-left:50px;" title="系列文章" />
+    <a
+      class="document-btn"
+      target="_blank"
+      href="https://panjiachen.github.io/vue-element-admin-site/zh/job/"
+    >内推招聘</a>
   </div>
 </template>
 
@@ -46,15 +51,17 @@ export default {
 <style lang="scss" scoped>
 .documentation-container {
   margin: 50px;
+  display: flex;
+  flex-wrap: wrap;
   .document-btn {
-    float: left;
     margin-left: 50px;
     display: block;
     cursor: pointer;
     background: black;
     color: white;
     height: 60px;
     width: 200px;
+    margin-bottom: 16px;
     line-height: 60px;
     font-size: 20px;
     text-align: center;