Update knn-vector-quantization.md

[shashankviswanadha]

Description

Describe what this change achieves.
Bug fix for params -> parameters

Issues Resolved

Closes #[8769]

Version

List the OpenSearch version to which this PR applies, e.g. 2.14, 2.12--2.14, or all.
all

Frontend features

If you're submitting documentation for an OpenSearch Dashboards feature, add a video that shows how a user will interact with the UI step by step. A voiceover is optional.
NA

Checklist

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[shashankviswanadha]

@Naarcha-AWS

[kolchfa-aws]

Thank you, @shashankviswanadha! Could you resolve DCO so we can merge this PR? Also, there's one more instance of params that needs to be changed to parameters. Do you want to change it as part of this PR? Thanks!