Update style for add-replication-rule page

[AllForNothing]

1. Fixes Delete an accessory cannot trigger Event based replication #19098

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

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[chlins]

lgtm

[codecov]

Codecov Report

Merging #19100 (930d707) into main (8c23bcd) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #19100      +/-   ##
==========================================
+ Coverage   67.38%   67.40%   +0.02%     
==========================================
  Files         992      992              
  Lines      108754   108754              
  Branches     2751     2751              
==========================================
+ Hits        73281    73306      +25     
+ Misses      31540    31520      -20     
+ Partials     3933     3928       -5     

Flag	Coverage Δ
unittests	67.40% <ø> (+0.02%)	⬆️

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see 8 files with indirect coverage changes