Add missing word

Author: reinink

src/pages/docs/border-radius.mdx

@@ -114,7 +114,7 @@ Use the `rounded-t-*`, `rounded-r-*`, `rounded-b-*`, and `rounded-l-*` utilities
 
 ### Rounding corners separately
 
-Use `rounded-tl-*`, `rounded-tr-*`, `rounded-br-*`, and `rounded-bl-*` utilities to only round one corner of an element.
+Use the `rounded-tl-*`, `rounded-tr-*`, `rounded-br-*`, and `rounded-bl-*` utilities to only round one corner of an element.
 
 ```html {{ example: true }}
 <div class="flex flex-col sm:flex-row items-center justify-around gap-4 text-white text-sm text-center font-bold leading-6">