Add NLP Course from Hugging Face (#10152)

* Add NLP Course from Hugging Face

Added NLP course from Hugging Face to free-courses-en.md file.

* (Changed made) Add NLP Course from Hugging Face

* (Changes made) Add NLP Course from Hugging Face

courses/free-courses-en.md

@@ -551,6 +551,7 @@
 * [Deep Reinforcement Learning Course - Hugging Face](https://huggingface.co/learn/deep-rl-course/unit0/introduction)
 * [Exploring Fairness in Machine Learning for International Development](https://ocw.mit.edu/resources/res-ec-001-exploring-fairness-in-machine-learning-for-international-development-spring-2020) - Dr. Richard Fletcher, Prof. Daniel Frey, Dr. Mike Teodorescu, Amit Gandhi, Audace Nakeshimana (MIT OpenCourseWare)
 * [Full Stack Computer Vision Tutorial with Tensorflow, Python, Tensorflow.JS with React.JS](https://www.youtube.com/playlist?list=PLgNJO2hghbmhUeJuv7PyVYgzhlgt2TcSr) - Nicholas Renotte
+* [Hugging Face NLP Course](https://huggingface.co/learn/nlp-course/chapter1/1) - Hugging Face
 * [Intro to Deep Learning](https://www.kaggle.com/learn/intro-to-deep-learning) - Ryan Holbrook
 * [Introduction to Reinforcement learning with David Silver](https://www.youtube.com/playlist?list=PLqYmG7hTraZBiG_XpjnPrSNw-1XQaM_gB) - David Silver
 * [MIT 6.S094: Deep Learning for Self-Driving Cars](https://selfdrivingcars.mit.edu)