Update README.mdx (#226)

Author: scallemang

exercises/04.context/README.mdx

@@ -132,6 +132,6 @@ provider.
 
 <callout-warning>
 	If you work in a React app on `<= 18.2`, you'll use `useContext` instead of
-	the more vercitile `use` hook. In the workshop we're using an experimental
+	the more versatile `use` hook. In the workshop we're using an experimental
 	version of React that has this feature.
 </callout-warning>