Update docs/miden/index.md

Author: kmurphypolygon

docs/miden/index.md

@@ -20,7 +20,7 @@ hide:
 </div>
 
 <div class="grid-container">
-    <div class="grid-item">
+  <div class="grid-item">
       <a href="./miden-base/introduction/get-started/prerequisites/">
          <div class="product-list-item-header">
             <div class="feature-card-heading">Getting started</div>