theme: Add some more space on the right for copy buttons

Fixes #2919

layouts/shortcodes/code.html

@@ -4,7 +4,7 @@
   class="shortcode-code font-mono not-prose relative mt-6 mb-8 border-1 border-gray-200 dark:border-gray-800 bg-light dark:bg-dark">
   {{ if (.Get "copy") }}
     <svg
-      class="absolute right-2 top-2 z-30 text-blue-600 hover:text-blue-500 cursor-pointer w-6 h-6"
+      class="absolute right-7 top-2 z-30 text-blue-600 hover:text-blue-500 cursor-pointer w-6 h-6"
       @click="$copy($refs.code)">
       <use href="#icon--copy"></use>
     </svg>