updated branch (#6671)

* Update free-courses-en.md

Added free courses with their link for machine learning and data science.

* Update free-courses-en.md

Added free courses for data science and machine learning with correct alphabetical order.

* Update free-courses-en.md

Added free course for machine learning in alphabetical order.

* Update free-courses-en.md

* Update free-courses-en.md
pull/6673/head
Kartikay Kapil 3 years ago committed by GitHub
parent 3d3929bc78
commit aa458a6416
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