docs: Update README.md import path for Yail CSS file

- Change CSS import from `@programmer_network/yail/dist/style.css` to `@programmer_network/yail/dist/yail.css`

Author: agjs

README.md

@@ -67,7 +67,7 @@ To ensure proper styling with Tailwind CSS, include the CSS file generated by
 Yail in your project.
 
 ```css
-@import "@programmer_network/yail/dist/style.css";
+@import "@programmer_network/yail/dist/yail.css";
 ```
 
 Here's how you can import a component: