Update README.md

Author: isangwanrahul

bootcamp/materials/3-spark-fundamentals/README.md

@@ -7,6 +7,8 @@ You need to install the required dependencies in `requirements.txt`
 Running `pip install -r requirements.txt` will install them.
 
 > **_NOTE:_** Make sure to have spark set locally before running below.
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 Running the pytest is easy. You need to run `python -m pytest` and you're good to go!