docs: fix pipeline comparison wording

[Rohan5commit]

Description

Fix the "difference" spelling in the transactions guide pipeline comparison text.

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

Validation

• Ran git diff --check

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Note

Low Risk
Low risk documentation-only change that corrects wording without affecting runtime behavior or APIs.

Overview
Fixes a spelling error in docs/transactions.md in the execAsPipeline section, changing "diffrence" to "difference" in the comparison text against Promise.all.

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[Copilot]

Pull request overview

Updates the transactions guide documentation to correct wording in the execAsPipeline vs Promise.all comparison, improving clarity in user-facing docs.

Changes:

• Fixes the misspelling of “difference” in the pipeline comparison text.

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[Copilot]

This sentence starts with a lowercase "the". For readability/grammar in the docs, capitalize it ("The difference …").

Suggested change

	the difference between the above pipeline and `Promise.all`:
	The difference between the above pipeline and `Promise.all`: