fix: remove trailing slash from polygonAmoy explorer URL

[JuoCode]

This pull request addresses an inconsistency in the polygonAmoy explorer URL. Currently, the URL has a trailing slash at the end. This trailing slash is not necessary and can potentially cause issues in some cases.

This PR removes the trailing slash from the polygonAmoy explorer URL to ensure consistency and avoid potential problems.

---

PR-Codex overview

The focus of this PR is to remove the trailing slash from the polygonAmoy explorer URL.

Detailed summary

• Removed trailing slash from polygonAmoy explorer URL in polygonAmoy.ts definition.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[changeset-bot]

🦋 Changeset detected

Latest commit: fbc2e8a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
viem	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

@JuoCode is attempting to deploy a commit to the wevm Team on Vercel.

A member of the Team first needs to authorize it.

[JuoCode]

I'll be adding changesets later.