fix w3 validation check

Author: Thierry Boileau

themes/restlet-framework/layouts/_partials/documentation/navbarTop.html

@@ -1,7 +1,7 @@
 <nav class="m-navigation m-navigation-site m-navigation-fixed">
   <div class="container-fluid">
     <div class="navigation-group">
-      <a class="navigation-logo" href="/"><img alt="/images/navbarTop.svg" src="/images/navbarTop.svg" /></a>
+      <a class="navigation-logo" href="/"><img alt="/images/navbarTop.svg" src="/images/navbarTop.svg" ></a>
       <span id="j-navigation-trigger" class="navigation-trigger"></span>
       <ul class="navigation-list navigation-list-right">
         <li class=""><a class="navigation__link" href="/features/">Features</a></li>