elections2021: Fix app banner link

elections2021/templates/elections2021/_program_app_banner.html

@@ -4,13 +4,13 @@
   </div>
   <div class="lead-collector-body bg-lemon py-10 px-8 w-full">
     <p class="head-alt-lg text-black mb-4">Vytáhněte si z programu to, co se vás týká</p>
-    <button class="btn btn--icon ">
+    <a href="{{ page.root_page.program_app_page_url }}" class="btn btn--icon ">
       <div class="btn__body-wrap">
         <div class="btn__body bg-acidgreen text-black py-4">Co pro vás máme</div>
         <div class="btn__icon ">
           <i class="ico--chevron-right"></i>
         </div>
       </div>
-    </button>
+    </a>
   </div>
 </div>