Update README.md

Author: virtualvivek

README.md

@@ -11,7 +11,7 @@ OR <br>
 
 ## Clone as a Repository:
 
-```css
+```php
 $ git clone https://github.com/virtualvivek/react-windows-ui-boilerplate.git
 $ cd react-windows-ui-boilerplate
 $ npm install