Fix spell check CI errors

[joelreymont]

Fixes #1026.

Note that .cspell/julia_words.txt absolutely must be sorted!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.57%. Comparing base (1d3c7da) to head (ab949dc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##            main    #1027       +/-   ##
==========================================
+ Coverage   0.00%   23.57%   +23.57%     
==========================================
  Files        218      231       +13     
  Lines       7721     7988      +267     
==========================================
+ Hits           0     1883     +1883     
+ Misses      7721     6105     -1616     

Files	Coverage Δ
...ntLearningCore/src/policies/agent/offline_agent.jl	90.62% <100.00%> (+90.62%)	⬆️
...forcementLearningCore/src/policies/approximator.jl	87.50% <100.00%> (+87.50%)	⬆️
...c/ReinforcementLearningCore/test/policies/agent.jl	100.00% <100.00%> (ø)

... and 67 files with indirect coverage changes