Typo Error in Strings Exercise

[srinivasskc]

Exercise: String in Python
https://github.com/codebasics/py/blob/master/Basics/Exercise/4_strings/4_strings_exercise.md

Sentence: Replace incorrect words in original strong with new ones

Spelling Error: Strong

It should be corrected to String.

[nagaajay4]

It has been fixed please close the Issue