fix a typo

[LintelXu]

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1229 into develop will increase coverage by 0.02%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop    #1229      +/-   ##
=============================================
+ Coverage      43.93%   43.96%   +0.02%     
  Complexity      1451     1451              
=============================================
  Files            253      253              
  Lines          10272    10272              
  Branches        1335     1335              
=============================================
+ Hits            4513     4516       +3     
+ Misses          5176     5174       -2     
+ Partials         583      582       -1

Impacted Files	Coverage Δ	Complexity Δ
...eata/core/rpc/netty/NettyClientChannelManager.java	70.27% <0%> (ø)	22 <0> (ø)	⬇️
...server/store/file/FileTransactionStoreManager.java	47.03% <0%> (+1.04%)	19% <0%> (ø)	⬇️

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[slievrly]

LGTM

[xingfudeshi]

LGTM