[design] improve menu layout page labels

Author: zombieFox

src/html/menu/menu-content/layout.html

@@ -146,7 +146,7 @@ <h1 class="menu-item-header-text">Page</h1>
 </div>
 <hr>
 <divclass="form-wrap">
-<labelclass="control-layout-scrollbars-label">Scrollbars</label>
+<labelclass="control-layout-scrollbars-label">Scrollbars style</label>
 </div>
 <divclass="form-wrap">
 <inputid="control-layout-scrollbars-auto" class="control-layout-scrollbars-auto" type="radio" name="control-layout-scrollbars" value="auto" tabindex="-1">
@@ -158,7 +158,7 @@ <h1 class="menu-item-header-text">Page</h1>
 </div>
 <divclass="form-wrap">
 <inputid="control-layout-scrollbars-none" class="control-layout-scrollbars-none" type="radio" name="control-layout-scrollbars" value="none" tabindex="-1">
-<labelfor="control-layout-scrollbars-none"><spanclass="label-icon"></span>None</label>
+<labelfor="control-layout-scrollbars-none"><spanclass="label-icon"></span>Hidden</label>
 </div>
 <divclass="form-helper">
 <pclass="control-layout-scrollbars-helper form-helper-item">May not work in some browsers.</p>