Fix small typo in handlers.rst

[gautamp8]

What do these changes do?

do duplicating side-effects -> no duplicating side-effects

Description

Issues/PRs

Issues: #12

Related:

Type of changes

• Refactoring (non-breaking change which does not alter the behaviour)
• Mostly documentation and examples (no code changes)

Checklist

• The code addresses only the mentioned problem, and this problem only
• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt

[zincr]

🤖 zincr found 0 problems , 0 warnings

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✅ Approvals
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✅ Dependency Licensing

[mnarodovitch]

Thank you very much for your contribution.
👍