Make it clear that small typos in docs don't require a CHANGELOG entry

[nicoddemus]

From: #5273 (comment)

[codecov]

Codecov Report

Merging #5276 into master will increase coverage by 5.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5276      +/-   ##
==========================================
+ Coverage   88.49%   93.64%   +5.15%     
==========================================
  Files         115      115              
  Lines       26163    26163              
  Branches     2578     2578              
==========================================
+ Hits        23152    24501    +1349     
+ Misses       2657     1347    -1310     
+ Partials      354      315      -39

Impacted Files	Coverage Δ
testing/python/setup_plan.py	20% <0%> (-80%)	⬇️
testing/python/metafunc.py	81.98% <0%> (-0.19%)	⬇️
testing/test_assertrewrite.py	84.06% <0%> (+0.29%)	⬆️
testing/test_capture.py	99.25% <0%> (+0.29%)	⬆️
testing/test_config.py	99.49% <0%> (+0.33%)	⬆️
testing/test_pdb.py	98.82% <0%> (+0.39%)	⬆️
src/_pytest/assertion/rewrite.py	95.47% <0%> (+0.48%)	⬆️
src/_pytest/junitxml.py	95.84% <0%> (+0.59%)	⬆️
testing/test_parseopt.py	97.97% <0%> (+0.8%)	⬆️
testing/acceptance_test.py	98.04% <0%> (+0.97%)	⬆️
... and 29 more

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[blueyed]

Could also mention [ci skip] then somehow ;)

[nicoddemus]

Oops indeed, my bad!