fix ancestors list spacing

Author: antoinem

lib/rdoc/generator/template/rorvswild/_sidebar_parent.rhtml

@@ -5,7 +5,7 @@
       <% for ancestor in (ancestors = klass.super_classes.reverse << klass) %>
         <% if ancestor.is_a?(String) %>
           <li>
-            <%= ancestor %>
+            <span><%= ancestor %></span>
             <ul class="link-list" role="directory">
         <% elsif ancestor.is_a?(RDoc::NormalClass) %>
           <li>

lib/rdoc/generator/template/rorvswild/css/rdoc.css

@@ -407,7 +407,8 @@ nav footer a:any-link {
   padding: 0.25em 0.75rem;
 }
 
-.nav-section li a {
+.nav-section li a,
+.nav-section li > span {
   padding: 0 0.25rem;
   display: inline-block;
 }