fix docs on v2

[t-bltg]

Description

Fix docs build excluding StatsPlots things for now.

Attribution

• I am listed in .zenodo.json (see How to get acknowledged #3503)

Things to consider

• Does it work on log scales?
• Does it work in layouts?
• Does it work in recipes?
• Does it work with multiple series in one call?
• PR includes or updates tests?
• PR includes or updates documentation?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.54%. Comparing base (fa63411) to head (cd3ada4).
Report is 1 commits behind head on v2.

Additional details and impacted files

@@           Coverage Diff           @@
##               v2    #4999   +/-   ##
=======================================
  Coverage   86.54%   86.54%           
=======================================
  Files          51       51           
  Lines        5991     5991           
=======================================
  Hits         5185     5185           
  Misses        806      806           

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