fix(gyro_bias_module): small fix about x,y,z

[SakodaShintaro]

Description

Fixed a small mistake regarding axes.

Related links

Tests performed

$ colcon build --packages-select deviation_estimator
Starting >>> deviation_estimator
[Processing: deviation_estimator]                             
Finished <<< deviation_estimator [54.3s]                       

Summary: 1 package finished [56.0s]

$ colcon test --packages-select deviation_estimator
Starting >>> deviation_estimator
Finished <<< deviation_estimator [5.83s]          

Summary: 1 package finished [7.17s]

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[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (8b5c007) 0.97% compared to head (0c80896) 19.31%.

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Additional details and impacted files

@@                 Coverage Diff                 @@
##           tier4/universe     #133       +/-   ##
===================================================
+ Coverage            0.97%   19.31%   +18.34%     
===================================================
  Files                 269       14      -255     
  Lines               20904      554    -20350     
  Branches              387      301       -86     
===================================================
- Hits                  203      107       -96     
+ Misses              20547      372    -20175     
+ Partials              154       75       -79     

Flag	Coverage Δ
differential	19.31% <33.33%> (?)
total	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...tools/deviation_estimator/src/gyro_bias_module.cpp	44.18% <33.33%> (-2.16%)	⬇️

... and 255 files with indirect coverage changes

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[kminoda]

LGTM, thanks!