Consolidated two scripts reverse_letters.py and reverse_long_words.py into one (#10140)

* Conolidated two scripts reverse_letters.py and reverse_long_words.py into one because of similar functionality

* Added a new line to accomodate characters without going over 88 char limit

* fixed grammar to pass pre-commit

* Changed faulty test case entirely to pass pre commit

* fixed a test case which was wrong

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Co-authored-by: Keyboard-1 <[email protected]>