docs: fix typo in config.md

[eltociear]

occured -> occurred

[codecov[bot]]

Codecov Report

Merging #3333 (39c3f3b) into main (9e72cbf) will decrease coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3333      +/-   ##
==========================================
- Coverage   69.47%   69.46%   -0.02%     
==========================================
  Files         534      534              
  Lines       71647    71647              
==========================================
- Hits        49778    49768      -10     
- Misses      21869    21879      +10     

Flag	Coverage Δ
integration-tests	16.38% <ø> (+0.02%)	:arrow_up:
unit-tests	64.49% <ø> (-0.03%)	:arrow_down:

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see 14 files with indirect coverage changes