Add test cases to cover a paragraph after a list

[trask]

I'm planning to submit a (separate) PR (EDIT see #511) to add a (javadoc) <p> tag in between </ul> and following text, but first sending this PR to add this scenario to the test cases (with no underlying code changes), so that it's clearer what my fix changes and what it doesn't.

Here's the new semconv content that exposed this issue when updating to v1.29.0: https://github.com/open-telemetry/semantic-conventions-java/pull/118/files#r1872551505

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.9%. Comparing base (4cb5868) to head (71507a6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #508   +/-   ##
=====================================
  Coverage   73.9%   73.9%           
=====================================
  Files         50      50           
  Lines       3911    3911           
=====================================
  Hits        2894    2894           
  Misses      1017    1017           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[trask]

it was confusing for me at first why it sometimes ended with a newline and sometimes not, which was part of the motivation for #509

[lquerel]

OK