Demos: minor changes in global nav menu.

Author: jaspermdegroot

docs/demos/nav.html

@@ -8,12 +8,12 @@
             <li><a href="widgets/accordions/">Accordion</a></li>
             <li><a href="widgets/navigation/">AJAX Navigation</a></li>
             <li><a href="widgets/autocomplete/">Autocomplete</a></li>
-            <li><a href="widgets/buttons/">Button</a></li>
+            <li><a href="widgets/buttons/">Buttons</a></li>
             <li><a href="widgets/checkbox/">Checkboxes</a></li>
             <li><a href="widgets/collapsibles/">Collapsible</a></li>
             <li><a href="widgets/controlgroups/">Controlgroup</a></li>
             <li><a href="widgets/dialog/">Dialog</a></li>
-		<li><a href="widgets/headers/bars-fixed.html">Fixed toolbars</a></li>
+            <li><a href="widgets/headers/bars-fixed.html">Fixed toolbars</a></li>
             <li><a href="widgets/sliders/switch.html">Flip switch toggle</a></li>
             <li><a href="widgets/footers/">Footer toolbar</a></li>
             <li><a href="widgets/forms/">Form elements</a></li>
@@ -24,7 +24,7 @@
             <li><a href="widgets/links/">Links</a></li>
             <li><a href="widgets/loader/">Loader overlay</a></li>
             <li><a href="widgets/navbar/">Navbar</a></li>
-		<li><a href="widgets/navbar/footer-persist-a.html">Navbar, persistent</a></li>
+            <li><a href="widgets/navbar/footer-persist-a.html">Navbar, persistent</a></li>
             <li><a href="widgets/pages/">Page</a></li>
             <li><a href="widgets/panels/">Panel <span class="ui-li-count">New</span></a></li>
             <li><a href="widgets/popup/">Popup</a></li>