reword a parametrize example sentence

[mei-li]

I found myself reading this sentence multiple times to understand it. I think splitting it makes more sense.

[codecov]

Codecov Report

Merging #5745 into master will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5745      +/-   ##
==========================================
- Coverage   96.17%   96.12%   -0.06%     
==========================================
  Files         117      117              
  Lines       25910    25910              
  Branches     2500     2500              
==========================================
- Hits        24918    24905      -13     
- Misses        691      700       +9     
- Partials      301      305       +4

Impacted Files	Coverage Δ
src/_pytest/compat.py	97.76% <0%> (-2.24%)	⬇️
src/_pytest/pathlib.py	89.63% <0%> (-1.04%)	⬇️
testing/test_pdb.py	98.01% <0%> (-1%)	⬇️
src/_pytest/assertion/rewrite.py	96.33% <0%> (-0.53%)	⬇️

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[nicoddemus]

Thanks, appreciate taking the time to improve the docs! 👍