fixed shape retrieval of state and action space in the "__initialize_q()" method.

[nikohou]

Description

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Issue

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Changes

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Screenshots

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Checklist

• [x] I have tested the changes locally and they work as intended.
• [x] I have updated the documentation, if applicable.
• [x] I have added new tests, if applicable.
• [x] I have added any required dependencies to the requirements.txt file, if applicable.
• [x] I have followed the project's code style and conventions.

Additional notes

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[kingsleynweye]

@nikohou thanks a lot for the pull request but it is not clear what problem was fixed. Please, can you provide some more context on the changes you have made?

Closing due to inactivity.