userguide: fix integer keyword matches list format - v1

[jufajardini]

List wasn't being properly rendered.

Link to ticket: https://redmine.openinfosecfoundation.org/issues/
none

Describe changes:

• Fix the formatting so that it actually shows the items like a list.

While checking the documentation, I noticed that what seemed supposed to be a list wasn't being rendered as such (cf https://docs.suricata.io/en/latest/rules/integer-keywords.html#comparison-modes)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.24%. Comparing base (30806ce) to head (3ea10c9).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12012      +/-   ##
==========================================
+ Coverage   83.22%   83.24%   +0.02%     
==========================================
  Files         910      910              
  Lines      258136   258136              
==========================================
+ Hits       214831   214894      +63     
+ Misses      43305    43242      -63     

Flag	Coverage Δ
fuzzcorpus	61.49% <ø> (+0.08%)	⬆️
livemode	19.38% <ø> (-0.01%)	⬇️
pcap	44.40% <ø> (-0.07%)	⬇️
suricata-verify	62.74% <ø> (-0.01%)	⬇️
unittests	59.29% <ø> (-0.01%)	⬇️

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[victorjulien]

Merged in #12013, thanks!