Update version-selector.html

Author: Ajay-singh1

layouts/partials/version-selector.html

@@ -21,7 +21,7 @@
 <li class="main-navigation-links-dropdown-item">
   <a href="{{ $mainUrl }}"
      class="main-navigation-links-link {{ if in $.Permalink (print "/v" $mainVerStr "/") }}active{{ end }}">
-    <b>v{{ $mainVerStr }} (Current)</b>
+    <strong>v{{ $mainVerStr }} (Current)</strong>
   </a>
 </li>