Add resources to context manager (#6591)

* Update context-manager@KAXF2kUAOvtBZhY8G9rkI.md

A simple context manager description.

* Update src/data/roadmaps/python/content/context-manager@KAXF2kUAOvtBZhY8G9rkI.md

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Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/python/content/context-manager@KAXF2kUAOvtBZhY8G9rkI.md

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 # Context Manager
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+Context managers are a contruct in Python that allows you to set up context for a block of code, and then automatically clean up or relase resources when the block is exited. It is most commonly used with the `with` statement.
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+Visit the following resources to learn more:
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+- [@article@Context managers in Python](https://www.freecodecamp.org/news/context-managers-in-python/)
+- [@article@Context managers](https://book.pythontips.com/en/latest/context_managers.html)