fix gf-cli command 'gen dao' help infomation

[snowich]

gf-cli 's command gen dao 's brief of noJsonTag in the input structure is missing a } , which leads to some flaws in gen dao 's help information

[codecov-commenter]

Codecov Report

Merging #2022 (2a3a46c) into master (bb3c51c) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2022   +/-   ##
=======================================
  Coverage   76.49%   76.50%           
=======================================
  Files         515      515           
  Lines       46666    46658    -8     
=======================================
- Hits        35699    35696    -3     
+ Misses       9000     8993    -7     
- Partials     1967     1969    +2     

Flag	Coverage Δ
go-1.15-386	76.41% <ø> (?)
go-1.15-amd64	76.41% <ø> (-0.01%)	⬇️
go-1.16-386	76.41% <ø> (?)
go-1.16-amd64	76.42% <ø> (+<0.01%)	⬆️
go-1.17-386	76.45% <ø> (-0.02%)	⬇️
go-1.17-amd64	76.45% <ø> (?)

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Impacted Files	Coverage Δ
os/gfsnotify/gfsnotify_watcher_loop.go	83.19% <0.00%> (-4.21%)	⬇️
os/gcmd/gcmd_command_object.go	52.41% <0.00%> (+1.00%)	⬆️
contrib/registry/polaris/polaris_watcher.go	73.21% <0.00%> (+5.35%)	⬆️

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