* False believes challenge based on sally anne test.
* Update test_memory_challenge_d.py
* Update challenge_d.md
Some text appearing in bold
* Update test_memory_challenge_d.py
* Update test_memory_challenge_d.py
* Update test_memory_challenge_d.py
* Update test_memory_challenge_d.py
black test_memory_challenge_d.py
* Update test_memory_challenge_d.py
replaced the dynamic time depending of the level to a fix time
* Update test_memory_challenge_d.py
isort command for the libraries
* Refactored memory challenge a
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Co-authored-by: Merwane Hamadi <merwanehamadi@gmail.com>