use size-* instead of w-* h-* (#1182)

Author: RobinMalfait

react/README.md

@@ -35,7 +35,7 @@ import { BeakerIcon } from '@heroicons/react/24/solid'
 function MyComponent() {
   return (
     <div>
-      <BeakerIcon className="h-6 w-6 text-blue-500" />
+      <BeakerIcon className="size-6 text-blue-500" />
       <p>...</p>
     </div>
   )

vue/README.md

@@ -32,7 +32,7 @@ Now each icon can be imported individually as a Vue component:
 ```vue
 <template>
   <div>
-    <BeakerIcon class="h-6 w-6 text-blue-500" />
+    <BeakerIcon class="size-6 text-blue-500" />
     <p>...</p>
   </div>
 </template>