更新fontawesome图标示例

ruoyi-admin/src/main/resources/templates/monitor/cache/cache.html

@@ -68,7 +68,7 @@
                 <div class="col-sm-4">
                     <div class="ibox float-e-margins">
                         <div class="ibox-title">
-                            <h5><i class="fa fa-sticky-note-o"></i> 缓存内容</h5>
+                            <h5><i class="fa fa-file-text"></i> 缓存内容</h5>
                             <div class="ibox-tools">
                                 <a href="javascript:clearAll()"><i class="fa fa-refresh"></i> 清理全部</a>
                             </div>