Quote pip install version-constrained package

[jaladh-singhal]

zsh (which is now default shell on MacOS) throws error if someone uncomments the pip install cell in Euclid (and other?) notebooks.

For e.g., change following:

!pip install s3fs astropy astroquery>=0.4.10 matploltib

to:

!pip install s3fs astropy 'astroquery>=0.4.10' matploltib

[bsipocz]

I'm on this, see #65 :)

[jaladh-singhal]

My bad! should have checked the issues list first :)

Closing it in favor of #65.