Update HNSW build param M's valid range

[cydrain]

Issue: #220

[sre-ci-robot]

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[mergify]

@cydrain 🔍 Important: PR Classification Needed!

For efficient project management and a seamless review process, it's essential to classify your PR correctly. Here's how:

1. If you're fixing a bug, label it as kind/bug.
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[alexanderguzhva]

/lgtm

[cydrain]

/kind bug