Improved docs

[Anon-im]

Motivation

(https://github.com/farcasterxyz/contracts/blob/main/src/IdGateway.sol) (https://github.com/farcasterxyz/contracts/blob/main/src/KeyGateway.sol) (https://github.com/farcasterxyz/contracts/blob/main/src/StorageRegistry.sol)

Change Summary

StorageRegistery -> StorageRegistry; inital owner -> initial owner; withan -> with an

Merge Checklist

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• [x] The PR title adheres to the conventional commits standard
• [ ] The PR has been tagged with change type label(s) (i.e. documentation, feature, bugfix, or chore)
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Additional Context

fixes #434

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PR-Codex overview

This PR focuses on correcting typos in the documentation comments across multiple Solidity files, ensuring clarity and accuracy in parameter descriptions.

Detailed summary

• In src/IdGateway.sol, corrected "StorageRegistery" to "StorageRegistry".
• In src/KeyGateway.sol, corrected "inital" to "initial" in the parameter description.
• In src/StorageRegistry.sol, fixed "withan" to "with an" in the error comment.

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