Update export function path for neural-compressor2.6

[PenghuiCheng]

What does this PR do?

Update export function path for neural-compressor >= v2.6.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

[echarlaix]

thanks for the fix @PenghuiCheng

[HuggingFaceDocBuilderDev]

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