[DOC] Use unordered list for Appendixes page

[dnskr]

Why are the changes needed?

The PR is needed to align Appendixes page with General Style and make it similar to other pages:

• Prefer unordered list than ordered.

How was this patch tested?

Built documentation locally and checked a desired style is used.

Before changes:

After changes:

Was this patch authored or co-authored using generative AI tooling?

No

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (e120d73) to head (e0f4054).
⚠️ Report is 81 commits behind head on master.

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #7212   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files         696     696           
  Lines       43540   43540           
  Branches     5891    5891           
======================================
  Misses      43540   43540           

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