Fixed typo

README.md

@@ -311,7 +311,7 @@ Minimum required xml markup for the browserconfig.xml file is as follows:
 <div id="id-used-by-cms" class="js-slider my-slider">
 ```
 
-* [ ] **CSS embed or line:** ![High][high_img] Avoid at all cost the use of CSS embed or inline: only used for valid reasons (ex: background-image for slider, CSS critical).
+* [ ] **embedded or inline CSS:** ![High][high_img] Avoid at all cost embeding CSS in `<style>` tags or using inline CSS: only use for valid reasons (e.g. background-image for slider, critical CSS).
 * [ ] **Vendor prefixes:** ![High][high_img] CSS vendor prefixes are used and are generated accordingly with your browser support compatibility.
 
 > * 🛠 [Autoprefixer CSS online](https://autoprefixer.github.io/)