fix: adjacent links to same location

skip the logo link by adding aria-hidden and tabindex -1
the 'home' link goes to the same location so this saves keyboard
users a step

Author: phette23

_includes/nav.html

@@ -3,7 +3,8 @@
   <!-- <div class="container-fluid"> -->
     <!-- Brand and toggle get grouped for better mobile display -->
     <!-- <div class="navbar-header"> -->
-      <a class="navbar-brand" aria-label="Code4Lib Home" href="{{ site.baseurl }}/"><img src="{{ "/assets/img/theme-images/c4l-logo.svg" | relative_url }}" alt="Code4Lib"></a>
+      {% comment %} WAVE: avoid adjacent links to same URL by skipping this one & keeping "Home" below {% endcomment %}
+      <a class="navbar-brand" aria-hidden="true" tabindex="-1" href="{{ site.baseurl }}/"><img src="{{ "/assets/img/theme-images/c4l-logo.svg" | relative_url }}" alt="Code4Lib"></a>
       <!-- <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-controls="mainNavBar" aria-expanded="false" aria-label="Toggle navigation"> -->
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#mainNavBar" aria-controls="mainNavBar" aria-expanded="false" aria-label="Toggle navigation">
         <span class="sr-only">Toggle navigation</span>