Fix accelerator stats API to follow API conventions.

[rohitagarwal003]

Introduced in #55188

Release note:

None

[rohitagarwal003]

/assign @smarterclayton

[vishh]

/lgtm
/approve

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mindprince, vishh

Associated issue: 55188

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[smarterclayton]

Lgtm too, thanks for fixig

[rohitagarwal003]

/kind bug
/priority critical-urgent
/sig node

[k8s-github-robot]

[MILESTONENOTIFIER] Milestone Pull Request Needs Approval

@mindprince @smarterclayton @vishh @kubernetes/sig-node-misc

Action required: This pull request must have the status/approved-for-milestone label applied by a SIG maintainer.

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[k8s-github-robot]

Automatic merge from submit-queue (batch tested with PRs 55908, 55829, 55293, 55653, 55665). If you want to cherry-pick this change to another branch, please follow the instructions here.