minor fixes for code doc

[nopcoder]

No description provided.

[codecov-io]

Codecov Report

Merging #1049 (274724a) into master (ed016a1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1049   +/-   ##
=======================================
  Coverage   46.26%   46.26%           
=======================================
  Files         152      152           
  Lines       12318    12318           
=======================================
  Hits         5699     5699           
  Misses       5895     5895           
  Partials      724      724           

Impacted Files	Coverage Δ
catalog/mvcc/cataloger_list_entries.go	85.34% <ø> (ø)

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[tzahij]

Thanks