[chore] make cspell.json list words line by line

[cijothomas]

Nit: Its visually easy with line-by-line entry in cspell.json, though both are totally valid! I think this is slightly more readable when making entries!

Examples also use that way:
https://cspell.org/docs/Configuration#cspelljson

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.50%. Comparing base (eb00c82) to head (8f1df6e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #12738   +/-   ##
=======================================
  Coverage   91.50%   91.50%           
=======================================
  Files         480      480           
  Lines       26464    26464           
=======================================
  Hits        24217    24217           
  Misses       1778     1778           
  Partials      469      469           

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