fix[Logout]: click blank area of ​​dropDown able to logout (#2896)

Fixed clicking blank area of ​​drop-down unable to log out

src/layout/components/Navbar.vue

@@ -36,8 +36,8 @@
           <a target="_blank" href="https://panjiachen.github.io/vue-element-admin-site/#/">
             <el-dropdown-item>Docs</el-dropdown-item>
           </a>
-          <el-dropdown-item divided>
-            <span style="display:block;" @click="logout">Log Out</span>
+          <el-dropdown-item divided @click.native="logout">
+            <span style="display:block;">Log Out</span>
           </el-dropdown-item>
         </el-dropdown-menu>
       </el-dropdown>