fix typos

[Vacant2333]

What type of PR is this? /kind cleanup fix typos

What this PR does / why we need it:

Which issue(s) this PR fixes: Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Merging #3618 (417423f) into master (8b4703e) will decrease coverage by 0.66%. The diff coverage is n/a.

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@@            Coverage Diff             @@
##           master    #3618      +/-   ##
==========================================
- Coverage   55.86%   55.20%   -0.66%     
==========================================
  Files         216      221       +5     
  Lines       20121    20831     +710     
==========================================
+ Hits        11240    11500     +260     
- Misses       8276     8721     +445     
- Partials      605      610       +5     

Flag	Coverage Δ
unittests	55.20% <ø> (-0.66%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/karmadactl/cmdinit/cert/cert.go	48.01% <ø> (ø)

... and 17 files with indirect coverage changes

[Vacant2333]

/assign @rainbowmango

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/karmada-io/karmada/blob/master/OWNERS)~~ [RainbowMango] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[Poor12]

/lgtm