add ruby indonesia @id-ruby

Author: SunDi3yansyah

assets/css/rails-indonesia.css

@@ -243,6 +243,7 @@ section.full {
 
 .more img {
   max-height: 75px;
+  max-width: 225px;
 }
 
 /*

assets/images/learn-more/ruby-id.png

@@ -158,11 +158,14 @@ <h3>
         Sumber belajar lainnya:
       </span>
     </h3>
+    <a href="https://ruby.id" target="_blank">
+      <img src="/assets/images/learn-more/ruby-id.png" alt="Ruby Indonesia" class="margin-lr-1em grayscale">
+    </a>
     <a href="https://www.idrails.com" target="_blank">
       <img src="/assets/images/learn-more/idrails.png" alt="ID Rails" class="margin-lr-1em grayscale">
     </a>
     <a href="https://www.rubypedia.com" target="_blank">
-      <img src="/assets/images/learn-more/rubypedia.png" alt="rubypedia" class="margin-lr-1em grayscale">
+      <img src="/assets/images/learn-more/rubypedia.png" alt="Ruby Pedia" class="margin-lr-1em grayscale">
     </a>
   </section>
 </div>