Update default-layout.html

Author: Dynamsoft-Henry

_layouts/default-layout.html

@@ -67,7 +67,7 @@
         {%- include page_footer.html -%}
     </div>
 
-    <iframe id="sideBarIframe" src="{{ site.firstLevelUrl }}/Hide_Tree_Page.html" allow="" height="0" frameborder="0"></iframe>
+    <iframe id="sideBarIframe" src="{{ site.firstLevelUrl }}Hide_Tree_Page.html" allow="" height="0" frameborder="0"></iframe>
 
     <script type="text/javascript">
         anchors.add();