fix: updating import in eoa guide

[avarobinson]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it correctly reflected in your commit message? (e.g. feat!: breaking change)
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PR-Codex overview

This PR updates the import statements in site/signers/eoa.md to include WalletClientSigner from the @alchemy/aa-core package.

Detailed summary

• Updated import statements to include WalletClientSigner from @alchemy/aa-core package.

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[avasisht23]

thanks for the catch. you can join these lines to import both since it's the same package

[avarobinson]

oops silly oversight

[avasisht23]

one nit, then 🚢 🙏