fix(core): overview generator should append additional content if any

[neilime]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.73%. Comparing base (b4968b0) to head (8d9f28b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #314   +/-   ##
=======================================
  Coverage   88.73%   88.73%           
=======================================
  Files          99       99           
  Lines        3434     3434           
  Branches      870      870           
=======================================
  Hits         3047     3047           
  Misses        346      346           
  Partials       41       41           

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