mention license. update links. fix spelling.

README.md

@@ -24,7 +24,7 @@ Our [Github Wiki](https://github.com/WebDevStudios/nextjs-wordpress-starter/wiki
   - Gutenberg
   - Lazy Blocks
 - Custom 404 page
-- Front-end Login/Registration
+- Frontend Login/Registration
 - Gravity Forms
 - Menus
 - Pages
@@ -61,6 +61,8 @@ Our [Github Wiki](https://github.com/WebDevStudios/nextjs-wordpress-starter/wiki
 
 ## Contributing :octocat:
 
-WebDevStudios is committed to open-source technologies and welcomes feedback via [Github Discussions](https://github.com/WebDevStudios/nextjs-wordpress-starter/discussions). We're also accepting contributions from the community. Learn how to [contribute to this project](https://github.com/WebDevStudios/nextjs-wordpress-starter/blob/main/.github/CONTRIBUTING.md).
+WebDevStudios is committed to open-source technologies and welcomes feedback via [Github Discussions](https://github.com/WebDevStudios/nextjs-wordpress-starter/discussions). We're also accepting contributions from the community. Learn how to [contribute to this project](https://github.com/WebDevStudios/nextjs-wordpress-starter/blob/main/CONTRIBUTING.md).
+
+The Next.js WordPress Starter is free software, and is released under the terms of the GNU General Public License version 2 or any later version. See [LICENSE.md](https://github.com/WebDevStudios/nextjs-wordpress-starter/blob/main/LICENSE.md) for complete license.
 
 Stay safe! 🍻