docs: update FQA (#44902)

* docs: update FQA [skip ci]

* test(theme): supplement unit test case

* chore: update docs

components/theme/__tests__/token.test.tsx

@@ -289,6 +289,8 @@ describe('Theme', () => {
       expect(token2.colorLink).toEqual(token2.colorInfo);
       expect(token2.colorLinkHover).toEqual(token2.colorInfoHover);
       expect(token2.colorLinkActive).toEqual(token2.colorInfoActive);
+      // colorInfo should not follow colorPrimary
+      expect(token2.colorLink).not.toEqual('#189cff');
 
       const token3 = getHookToken({ algorithm: [theme.darkAlgorithm] });
       expect(token3.colorLink).toEqual(token3.colorInfo);

docs/react/faq.en-US.md

@@ -211,6 +211,10 @@ Please ref document [Shadow Dom Usage](/docs/react/customize-theme#shadow-dom-us
 
 Please ref dynamic theme document [SSR](/docs/react/customize-theme#server-side-render-ssr) part.
 
+## What is the relationship between colorPrimary and colorInfo and colorLink in V5?
+
+In the Ant Design Token system, `colorPrimary` and `colorInfo` are both [Seed Token](../react/customize-theme.en-US.md#seed-token), so they are independent of each other. `colorLink` is an [Alias Token](../react/customize-theme.en-US.md#alias-token), inherits `colorInfo` by default, and is independent of `colorPrimary`.
+
 ## How to spell Ant Design correctly?
 
 - ✅ **Ant Design**: Capitalized with space, for the design language.

docs/react/faq.zh-CN.md

@@ -239,6 +239,10 @@ import { ConfigProvider } from 'antd';
 
 请参考动态主题文档 [服务端渲染](/docs/react/customize-theme-cn#服务端渲染) 部分内容。
 
+## V5 中 colorPrimary 和 colorInfo 及 colorLink 之间是什么关系？
+
+在 Ant Design Token 系统中 `colorPrimary` 和 `colorInfo` 同属于 [基础变量（Seed Token）](../react/customize-theme.zh-CN.md#基础变量seed-token)，所以两者是互相独立的。`colorLink` 则属于 [别名变量（Alias Token）](../react/customize-theme.zh-CN.md#别名变量alias-token), 默认继承 `colorInfo` 且和 `colorPrimary` 无关。
+
 ## 如何正确的拼写 Ant Design？
 
 - ✅ **Ant Design**：用空格分隔的首字母大写单词，指代设计语言。