fix scheme filename typo

[Laevos]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:
Fixes spelling in the name of the schema registering file.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[karmada-bot]

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

[XiShanYongYe-Chang]

Thanks a lot!
/lgtm

[RainbowMango]

/approve

Thanks for doing this and welcome to the Karmada community. :)

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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• OWNERS [RainbowMango]

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[codecov-commenter]

Codecov Report

Merging #3726 (39c5817) into master (912ba8e) will increase coverage by 0.00%.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master    #3726   +/-   ##
=======================================
  Coverage   55.69%   55.70%           
=======================================
  Files         222      222           
  Lines       21195    21195           
=======================================
+ Hits        11805    11807    +2     
+ Misses       8763     8761    -2     
  Partials      627      627           

Flag	Coverage Δ
unittests	55.70% <ø> (+<0.01%)	⬆️

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see 1 file with indirect coverage changes