docs(base-account): HTTP links to Coinbase/Base properties in basenames FAQ

**Path:** `docs/sdks/base-account/basenames/basenames-faq.mdx`

## Description

Three links in the Basenames FAQ page use `http://` even though all three destinations are Coinbase/Base's own properties and serve over HTTPS:

- Line 28: `[Coinbase Verification](http://coinbase.com/onchain-verify)`
- Line 33: `[BNS name owner](http://basename.app)`
- Line 85: `[base.org/names](http://base.org/names)`

## Suggested fix

Update all three to `https://`. Verified each resolves correctly over HTTPS.

打开 docs/sdks/base-account/basenames/basenames-faq.mdx，并检查第 28、33 和 85 行标识的三个链接。将每个 Coinbase/Base URL 从 http:// 更新为 https://，然后验证链接能正确解析，并且 FAQ 能够正常渲染。

由索引模型根据 Issue 内容生成。