'make' is not recognized as an internal or external command, operable program or batch file. [Sphinx]
I get my own answer on my own question.
You should locate your own directory and make sure you sphinx-build in your folder
I was trying to study sphinx python documentation, i was struggling to make an html inside of my directory. I already try it to my cmd prompt but the error shows. 
$ make html
P.s I already install Python and NodeJs and Git (incase)