[JOSS Review] Small error in installation instructions

[gomezzz]

In the installation instructions it is stated for optional dependencies to run

pip install amltk[notebook]
...

I believe this has to be

pip install "amltk[notebook]" 
...

to function - at least on Linux. :)

(opened as part of JOSS Review openjournals/joss-reviews#6367 )

[eddiebergman]

Good spot, I've ran into the issue a few times in other repos. Funnily enough, I think it is also dependant on which shell is being used, i.e bash vs zsh