Fix 1421

[0xlukem]

Description

This PR remove and old link and resolves #1421

Checklist

• Added a label 🏷️ to this PR
• Ran my changes through Grammarly
• Added a disclaimer if required
• If pages were moved, opened a corresponding PR in moonbeam-mkdocs to update redirects

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Translations

Does this PR update a page that also exists on the Chinese docs site? See mapping to confirm.

• Yes
• No

If Yes, complete the following:

• Opened a PR on the Chinese docs repo for the corresponding page
• Updated images, snippets, or variables if they were moved, renamed, or deleted

Link to the corresponding CN docs PR: <INSERT_LINK>

[Copilot]

Pull request overview

This PR aims to address broken links reported in #1421 by removing an outdated external link from the Ethereum precompiles documentation.

Changes:

• Removed the reference to the external “Web3 Type Converter” tool from the Identity Function section.

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