Fix typo in release_note.md

[eltociear]

Embeded -> Embedded

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: eltociear To complete the pull request process, please assign xiaofan-luan after the PR has been reviewed. You can assign the PR to them by writing /assign @xiaofan-luan in a comment when ready.

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[sre-ci-robot]

Welcome @eltociear! It looks like this is your first PR to zilliztech/GPTCache 🎉

[SimFG]

@eltociear thank your pull request, please modify the target branch to dev, and sign the commit, like git commit --amend -s

[eltociear]

@SimFG sorry. I made a new PR because I failed a lot.