Report Devstack Mentions in Docs Pages

[sarina]

Please report your findings of Devstack mentions on pages on https://docs.openedx.org/en/latest/index.html - as well as any of the remaining pages on edx.readthedocs.io. For Tutor docs please report on https://github.com/overhangio/tutor/issues - feel free to tag me there if you'd like, I've been tackling those too.

Also if you see something mentioned that you'd like to fix, please go for it! Just write a note that you'll be addressing it.