[Release-1.29] Correct the k3s token command help

[manuelbuil]

Backport: #11673
Issue: #11682

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.62%. Comparing base (d70d058) to head (9a5b31b).
Report is 1 commits behind head on release-1.29.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.29   #11683      +/-   ##
================================================
- Coverage         49.26%   46.62%   -2.65%     
================================================
  Files               185      185              
  Lines             19430    19430              
================================================
- Hits               9573     9059     -514     
- Misses             8470     9045     +575     
+ Partials           1387     1326      -61     

Flag	Coverage Δ
e2etests	39.93% <100.00%> (-4.30%)	⬇️
inttests	35.10% <100.00%> (-0.04%)	⬇️
unittests	16.88% <0.00%> (ø)

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