Add AI Courses, check_urls=free-courses-en.md (#5109)

Co-authored-by: Eric Hellman <eric@hellman.net>

free-courses-en.md

@@ -512,6 +512,7 @@
 
 * [Advanced Data Structures](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-851-advanced-data-structures-spring-2012/)
 * [Advanced NLP using spaCy](https://course.spacy.io) - Ines Montani
+* [AI Courses](https://software.intel.com/content/www/us/en/develop/topics/ai/training/courses.html) - Intel Corporation
 * [Algorithm Design and Implementation](https://www.youtube.com/playlist?list=PL6EF0274BD849A7D5)
 * [Aml-2018 Ambient Intelligence](https://www.youtube.com/playlist?list=PLqRTLlwsxDL8fUcY2Y54sITILyJcTySpC) (F. Corno - L. De Russis - A. Monge Roffarello)
 * [Berkeley's CS  61B: Data Structures](https://archive.org/details/ucberkeley_webcast_QMV45tHCYNI)