docs: fix too many karmada relases in Kubernetes compatibility list

[my-git9]

What type of PR is this?

/kind documentation

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?:

NONE

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 51.76%. Comparing base (6534ffb) to head (d8e67b7).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #4782 +/- ## ======================================= Coverage 51.76% 51.76% ======================================= Files 250 250 Lines 24980 24980 ======================================= + Hits 12930 12931 +1 + Misses 11340 11339 -1 Partials 710 710 ``` | [Flag](https://app.codecov.io/gh/karmada-io/karmada/pull/4782/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/karmada-io/karmada/pull/4782/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io) | `51.76% <ø> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=karmada-io#carryforward-flags-in-the-pull-request-comment) to find out more.

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[karmada-bot]

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