Fix update version banner alignment

Author: bkeepers

lib/flipper/ui/views/layout.erb

@@ -17,7 +17,7 @@
         </div>
       <%- end -%>
 
-      <div class="container text-muted small mb-3">
+      <div class="text-muted small text-end">
         <a href="#" class="badge text-bg-warning ms-2 d-none" style="font-size:100%" id="new-version-badge" data-version="<%= Flipper::VERSION %>">
         </a>