Fix: Correct broken Basenames OnchainKit tutorial link in FAQ

[wamimi]

What changed? Why?

Fixed a broken link in the Basenames FAQ section on base.org/names. The "tutorial here" link in the answer to "I am a builder. How do I integrate Basenames to my app?" was pointing to a non-existent URL (https://docs.base.org/docs/basenames-tutorial-with-onchainkit) which returns a 404 error.

This PR updates the link to the correct URL (https://docs.base.org/identity/basenames/basenames-onchainkit-tutorial) to ensure builders can easily access the proper documentation when integrating Basenames into their applications.

Notes to reviewers
This is a simple link correction in the FAQ component. The new link directs to the existing OnchainKit tutorial page that contains the correct integration instructions.

How has it been tested?

• Verified the new link resolves correctly to the intended OnchainKit tutorial documentation page
• Confirmed no other functionality is affected by this change

Have you tested the following pages?

BaseWeb

• base.org/names - Verified the corrected link now works properly in the FAQ section
• [] base.org
• [] base.org/builders
• [] base.org/ecosystem
• [] base.org/name/jesse
• [] base.org/manage-names
• [] base.org/resources

BaseDocs

• docs.base.org/identity/basenames/basenames-onchainkit-tutorial - Verified this page exists and loads correctly
• [] docs sub-pages

[vercel]

@wamimi is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 2/2	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2