chore: remove redundant word in comment

[jishudashen]

Description

remove redundant word in comment

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Checklist

• I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

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Tests

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Summary by cubic

Removed a duplicated word in a comment in core/autocomplete/filtering/streamTransforms/charStream.ts to improve readability. No code or behavior changes.

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[jishudashen]

I have read the CLA Document and I hereby sign the CLA

[RomneyDa]

@jishudashen thanks for the contribution, however, this is not needed. Consider working on an opened issue