Remove customization for definition lists

[johannaengland]

Find an example here: https://nav--2868.org.readthedocs.build/en/2868/hacking/using-docker.html#using-the-container-s

It does not look the same as with the bootstrap theme, but I find it still neat and clear.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.69%. Comparing base (9cfd877) to head (739c730).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2868   +/-   ##
=======================================
  Coverage   56.69%   56.69%           
=======================================
  Files         602      602           
  Lines       43971    43971           
=======================================
  Hits        24931    24931           
  Misses      19040    19040           

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

[github-actions]

Test results

     12 files       12 suites   11m 27s ⏱️
3 320 tests 3 320 ✔️ 0 💤 0 ❌
9 435 runs  9 435 ✔️ 0 💤 0 ❌

Results for commit 739c730.

[lunkwill42]

It doesn't need to look like the bootstrap theme, but it needs to be neat and clean, without weird spacing, alignment and text wrapping issued :)