list dataset description in search page width filter

src/app/search/search.component.html

@@ -7,7 +7,8 @@
   <div *ngIf="!isXmlItemsEmpty()" class="w3-container">    
     <table class="w3-table-all w3-card-4">    
       <thead>    
-        <tr style="text-align: center;">Dataset description</tr>    
+        <th style="text-align: center;">Title</th>    
+        <th style="text-align: center;">Description</th>    
       </thead>    
       <tbody>
         <tr *ngFor="let item of xmlItems">