docs: fix XML comments for boolean return of ILogEntryFilter

[Flash0ver]

Summary

Fix XML comments for bool return of ILogEntryFilter.

Remarks

Follow-up to #5297, where we did fix the grammar of one comment during review, but missed the 2nd comment.
See suggestion applied via #5297 (comment).

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#skip-changelog, due to follow-up to still Unreleased changes of #5297

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.16%. Comparing base (334bcdf) to head (b1d9f24).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5311      +/-   ##
==========================================
- Coverage   74.17%   74.16%   -0.02%     
==========================================
  Files         508      508              
  Lines       18353    18353              
  Branches     3586     3586              
==========================================
- Hits        13614    13612       -2     
- Misses       3867     3869       +2     
  Partials      872      872              

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