QDAC II: Documentation improvements

[jpsecher]

No description provided.

[jpsecher]

Documentation fixes.

Are there any plans for a contrib release in the near future?

[codecov-commenter]

Codecov Report

Merging #173 (6b0eae1) into master (d1382d4) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #173      +/-   ##
==========================================
- Coverage   19.38%   19.38%   -0.01%     
==========================================
  Files         124      124              
  Lines       15696    15697       +1     
==========================================
  Hits         3043     3043              
- Misses      12653    12654       +1     

Impacted Files	Coverage Δ
qcodes_contrib_drivers/drivers/QDevil/QDAC2.py	96.44% <ø> (ø)
...contrib_drivers/tests/QDevil/sim_qdac2_fixtures.py	80.00% <0.00%> (ø)
...codes_contrib_drivers/drivers/BlueFors/BlueFors.py	0.00% <0.00%> (ø)

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[jenshnielsen]

@jpsecher Happy to make on this week if that works for you?