修正导出页面显示超出，修正表格title。

application/views/templates/workorder/view.html

@@ -40,9 +40,9 @@
                         <table class="table table-hover table-bordered">
                             <thead>
                             <tr>
-                                <th width="20%">告警名称</th>
-                                <th width="10%">类型</th>
-                                <th width="10%">等级</th>
+                                <th width="20%">告警事件名称</th>
+                                <th width="10%">事件类型</th>
+                                <th width="10%">主机等级</th>
                                 <th width="15%">时间</th>
                                 <th>告警详情</th>
                             </tr>