docs: fix duplicate words in 4 doc pages

[0xAxiom]

Fix duplicate words in four documentation pages:

• parseEventLogs.md L440: will not return return the → will not return the
• toHex.md L7: to a hex value value → to a hex value
• sendCalls.mdx L333: providing the the \abi`→providing the `abi``
• sendCallsSync.mdx L339: providing the the \abi`→providing the `abi``

All four are word-for-word duplicates, not semantic changes.

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