[Release-1.31] Correct the k3s token command help

[manuelbuil]

Backport: #11673
Issue: #11680

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.25%. Comparing base (56ec5dd) to head (9505049).
Report is 1 commits behind head on release-1.31.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.31   #11685      +/-   ##
================================================
- Coverage         49.63%   47.25%   -2.38%     
================================================
  Files               185      185              
  Lines             19262    19262              
================================================
- Hits               9560     9103     -457     
- Misses             8318     8836     +518     
+ Partials           1384     1323      -61     

Flag	Coverage Δ
e2etests	40.26% <100.00%> (-3.90%)	⬇️
inttests	34.96% <100.00%> (-0.17%)	⬇️
unittests	17.03% <0.00%> (ø)

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