Corrected poll timeout example

[Jay179-sudo]

What type of PR is this?

This PR corrects a small documentation error.
/kind documentation

What this PR does / why we need it:

Fixes small documentation errors.

Which issue(s) this PR fixes:
Fixes #4775

Special notes for your reviewer:

None

Does this PR introduce a user-facing change?:

NONE

[karmada-bot]

Welcome @Jay179-sudo! It looks like this is your first PR to karmada-io/karmada 🎉

[Vacant2333]

/lgtm
thanks for your contribution

[Jay179-sudo]

/assign @XiShanYongYe-Chang
Looking forward to more!

[XiShanYongYe-Chang]

@Jay179-sudo Thanks~
Ask @RainbowMango to help run the CI.
/cc @RainbowMango

[RainbowMango]

Ask @RainbowMango to help run the CI.

Done.

/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango, Vacant2333

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• test/OWNERS [RainbowMango]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.76%. Comparing base (6534ffb) to head (deaf341).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4783   +/-   ##
=======================================
  Coverage   51.76%   51.76%           
=======================================
  Files         250      250           
  Lines       24980    24980           
=======================================
  Hits        12930    12930           
  Misses      11340    11340           
  Partials      710      710           

Flag	Coverage Δ
unittests	51.76% <ø> (ø)

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