Update styling.mdx

Fix the "Padding" example code to actually style padding

Author: pkawula

docs/docs/examples/styling.mdx

@@ -347,7 +347,7 @@ import 'react-tooltip/dist/react-tooltip.css'
 
 <style>
 .example-container .example-padding {
-  border-radius: 50%;
+  padding: 48px;
 }
 </style>
 
@@ -375,4 +375,4 @@ import 'react-tooltip/dist/react-tooltip.css'
 
 In summary, if you do it correctly you can use CSS specificity instead of `!important`.
 
-:::
+:::