Use local variable in cards partial

This way it's going to be easier to reuse.

app/views/pages/custom_page.html.erb

@@ -20,7 +20,7 @@
 
   <% if @cards.any? %>
     <div class="small-12 column">
-      <%= render "shared/cards" %>
+      <%= render "shared/cards", cards: @cards %>
     </div>
   <% end %>
 

app/views/shared/_cards.html.erb

@@ -1,6 +1,6 @@
 <div class="row">
   <div class="cards-container">
-    <% @cards.each do |card| %>
+    <% cards.each do |card| %>
       <%= render "shared/card", card: card %>
     <% end %>
   </div>

app/views/welcome/index.html.erb

@@ -21,7 +21,7 @@
       <div class="small-12 column <%= "large-8" if feed_processes_enabled? %>">
         <h2 class="title"><%= t("welcome.cards.title") %></h2>
 
-        <%= render "shared/cards" %>
+        <%= render "shared/cards", cards: @cards %>
       </div>
     <% end %>