[docs] https://docs.python.org/3/using/mac.html#getting-and-installing-macpython - wrong for python 3.7.3

Hi, https://docs.python.org/3/using/mac.html#getting-and-installing-macpython says "What you get after installing is a number of things: - A MacPython 3.6 folder in your Applications folder." However, after installing just now $ /usr/local/bin/python3 -V Python 3.7.3 I instead found a folder called /Applications/Python 3.7 Cheers, Adam