MARCH 2024 Big Update

[simoninithomas]

This big update solves:

• Super tiny fix format #420
• Update variance-problem.mdx #490
• [HANDS-ON BUG] Two different variables for one value  #483
• Fix typo in discord101.mdx #489
• Unit 5 Proposal Updates #487
• [HANDS-ON BUG] Bonus Unit 1 Train Huggy #478
• [HANDS-ON BUG] unit5 hands on Pyramids #480
• Update Imports #472
• Super tiny fix format #420
• Update unit1.ipynb #500
• [UPDATE] An unproper description in the Prerequisites in unit1.ipynb #501
• [HANDS-ON BUG] Typos in the material Bonus Unit 2 #482
• [UPDATE] Duplicate image in Unit 3 - The Deep Q Algorithm #479
• [HANDS-ON BUG] The environment CartPole-v1 used in unit 4 has weird configurations #468
• Unit 4 ipynb fix #469