docs: ‼️ Fix Critical Typo In README.md ‼️

Author: angelofallars

README.md

@@ -33,7 +33,7 @@ See the [Live Example](https://gnat.github.io/css-scope-inline/example.html)! Th
 
 This uses `MutationObserver` to monitor the DOM, and the moment a `<style>` tag is seen, it scopes the styles to whatever the parent element is. No flashing or popping. 
 
-This method also leaves your existing styles untouched, allowing you to mix and match at your liesure.
+This method also leaves your existing styles untouched, allowing you to mix and match at your leisure.
 
 ## 🎁 Install