added some free next js courses (#8558)

* added some free next js courses

* Update courses/free-courses-en.md

Co-authored-by: bugbunnyy <97289522+bugbunnyy@users.noreply.github.com>

* add space

* Update courses/free-courses-en.md

* Update courses/free-courses-en.md

* Update courses/free-courses-en.md

* sort

Co-authored-by: Eric Hellman <eric@hellman.net>
Co-authored-by: bugbunnyy <97289522+bugbunnyy@users.noreply.github.com>

courses/free-courses-en.md

@@ -843,6 +843,7 @@
 
 * [Master Next JS by Building Real Projects](https://www.youtube.com/playlist?list=PL6QREj8te1P7gixBDSU8JLvQndTEEX3c3) - JavaScript Mastery
 * [Mastering Next.js](https://masteringnextjs.com)
+* [Next.js for Beginners - Full Course](https://www.youtube.com/watch?v=1WmNXEVia8I) - Kapehe (FreeCodeCamp)
 * [Next.js Tutorial for Beginners](https://youtube.com/playlist?list=PLC3y8-rFHvwgC9mj0qv972IO5DmD-H0ZH) - Codevolution