chore(pure_pursuit): fix typo

[takayuki5168]

Description

fix typo of pure_pursuit package.

Tests performed

spell check

Effects on system behavior

Nothing

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[takayuki5168]

@TakaHoribe Could you approve the PR

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (13b96ad) 14.93% compared to head (7c77c59) 14.93%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4403   +/-   ##
=======================================
  Coverage   14.93%   14.93%           
=======================================
  Files        1515     1515           
  Lines      104545   104545           
  Branches    31777    31777           
=======================================
  Hits        15613    15613           
  Misses      71895    71895           
  Partials    17037    17037           

Flag	Coverage Δ		*Carryforward flag
differential	13.64% <0.00%> (?)
total	14.93% <ø> (+<0.01%)	⬆️	Carriedforward from 13b96ad

*This pull request uses carry forward flags. Click here to find out more.

Files Changed	Coverage Δ
...pure_pursuit/include/pure_pursuit/pure_pursuit.hpp	0.00% <0.00%> (ø)
...ure_pursuit/src/pure_pursuit_core/pure_pursuit.cpp	0.00% <0.00%> (ø)

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