fix(crosswalk): fix the doc of TTC-TTV graph

[takayuki5168]

Description

Fixed the doc of TTC/TTV graph.

Previously, ego_pass_first and ego_pass_later are opposite.

Tests performed

No need.

Effects on system behavior

Nothing

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (e35f14d) 14.90% compared to head (5ee7b9c) 14.90%.
Report is 9 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4480   +/-   ##
=======================================
  Coverage   14.90%   14.90%           
=======================================
  Files        1520     1520           
  Lines      104772   104772           
  Branches    31899    31899           
=======================================
  Hits        15619    15619           
  Misses      72098    72098           
  Partials    17055    17055           

Flag	Coverage Δ		*Carryforward flag
differential	11.14% <ø> (?)
total	14.90% <ø> (ø)		Carriedforward from e35f14d

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

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