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changed formatting of .md

PyClass/PyClassLessons,noisebridge/PythonClass,razzius/PyClassLessons,razzius/PyClassLessons,noisebridge/PythonClass,noisebridge/PythonClass,noisebridge/PythonClass,razzius/PyClassLessons,PyClass/PyClassLessons,PyClass/PyClassLessons,razzius/PyClassLessons