Documentation fixes

[tarnold17]

Fixes/Addresses:

Fixing various typos that I found in the FOQUS documentation while onboarding.

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[sotorrio1]

LGTM

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.01 ⚠️

Comparison is base (16ff7ad) 37.22% compared to head (93cc814) 37.22%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1143      +/-   ##
==========================================
- Coverage   37.22%   37.22%   -0.01%     
==========================================
  Files         161      160       -1     
  Lines       36351    36343       -8     
  Branches     5944     5944              
==========================================
- Hits        13531    13528       -3     
+ Misses      21738    21733       -5     
  Partials     1082     1082              

see 2 files with indirect coverage changes

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[lbianchi-lbl]

Re: the macOS CI jobs not running, it looks like we might be using a version of the OS that's not available anymore:

I'll try opening a PR that addresses this. In the meantime, I don't see why we shouldn't merge this in, as the failures are with all probability unrelated.