Fix Typographical Errors in Contracts and Tests

[Marcofann]

This PR resolves minor typographical errors across several files in the repository to improve clarity and maintain code quality. Changes include:

1. ERC2981.sol:

   • Fixed typo in the error documentation for ERC2981InvalidTokenRoyalty.

2. Arrays.sol:

   • Corrected typos in the documentation related to setting the length of a dynamic array.

3. TransientSlot.sol:

   • Fixed typo in the documentation for AddressSlot.

4. ERC2771Forwarder.t.sol:

   • Corrected typos in comments for test case setup.

PR Checklist:

• Tests
• Documentation
• Changeset entry (run npx changeset add)

This is a minor update with no functional changes to the codebase. It ensures better readability and adherence to documentation standards.

[changeset-bot]

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Latest commit: af71696

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