Fix query_coord.proto comment format caused lint issue

[congqixia]

block comment in query_coord.proto has no blank line after, which caused generated .pb.go file has lint issue
/kind improvement

[sre-ci-robot]

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• internal/proto/OWNERS [congqixia]

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[codecov]

Codecov Report

Merging #27375 (aafd5a0) into master (6539a5a) will increase coverage by 0.00%.
Report is 5 commits behind head on master.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #27375   +/-   ##
=======================================
  Coverage   81.50%   81.51%           
=======================================
  Files         801      801           
  Lines      114371   114371           
=======================================
+ Hits        93222    93230    +8     
+ Misses      17965    17959    -6     
+ Partials     3184     3182    -2     

see 15 files with indirect coverage changes

[XuanYang-cn]

/lgtm