style(framework): 更新皮肤切换图标为仪表板图标

xxl-job-admin/src/main/resources/templates/framework/base/index.ftl

@@ -43,7 +43,7 @@
                                 <a href="javascript:" style="height: 30px;padding: 3px 25px;color: #777;" ><i class="fa fa-key"></i> ${I18n.change_pwd}</a>
                             </li>
                             <li id="changeSkin" >
-                                <a href="javascript:" style="height: 30px;padding: 3px 25px;color: #777;" ><i class="fa fa-key"></i> ${I18n.change_skin}</a>
+                                <a href="javascript:" style="height: 30px;padding: 3px 25px;color: #777;" ><i class="fa fa-dashboard"></i> ${I18n.change_skin}</a>
                             </li>
                             <li id="logoutBtn" >
                                 <a href="javascript:" style="height: 30px;padding: 3px 25px;color: #777;" ><i class="fa fa-sign-out"></i> ${I18n.logout_btn}</a>