[ISSUE #10819] Correct misleading CommitLog buffer comment

[fuyou001]

Which Issue(s) This PR Fixes

• Fixes [Doc] Correct misleading buffer comment in CommitLog#doAppend #10819

Brief Description

Correct the misleading comment before byteBuffer.put(preEncodeBuffer) in DefaultAppendMessageCallback#doAppend(...).

The destination buffer belongs to the CommitLog append path and may be backed by the mapped byte buffer, the transient write buffer, or the shared staging buffer used by writeWithoutMmap. It is not a queue or ConsumeQueue buffer. The revised comment makes clear that this line appends an already encoded message to the CommitLog buffer.

This is a documentation-only change with no runtime behavior, API, protocol, configuration, or persisted-format impact.

How Did You Test This Change?

• Ran git diff --check successfully.
• No behavioral tests were added or run because only a source-code comment changed.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 48.25%. Comparing base (2daf0e2) to head (0724d74).

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10820      +/-   ##
=============================================
- Coverage      48.32%   48.25%   -0.08%     
+ Complexity     13516    13497      -19     
=============================================
  Files           1380     1380              
  Lines         101138   101138              
  Branches       13120    13120              
=============================================
- Hits           48876    48800      -76     
- Misses         46298    46353      +55     
- Partials        5964     5985      +21     

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[RockteMQ-AI]

LGTM. Trivial comment-only fix — the old comment incorrectly referred to "queue buffer" when the code writes to the CommitLog buffer. The corrected comment accurately describes the operation.

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Automated review by github-manager-bot

[RockteMQ-AI]

Summary

Defensive fix with proper validation and test coverage. LGTM.

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Automated review by github-manager-bot