docs: add documentation of all typings (#9359)

src/password-input/README.md

@@ -148,6 +148,8 @@ export default {
 | ----- | ----------------------------- | --------- |
 | focus | Emitted when input is focused | -         |
 
+## Theming
+
 ### CSS Variables
 
 The component provides the following CSS variables, which can be used to customize styles. Please refer to [ConfigProvider component](#/en-US/config-provider).

src/password-input/README.zh-CN.md

@@ -158,6 +158,8 @@ export default {
 | ------ | ---------------- | -------- |
 | focus  | 输入框聚焦时触发 | -        |
 
+## 主题定制
+
 ### 样式变量
 
 组件提供了下列 CSS 变量，可用于自定义样式，使用方法请参考 [ConfigProvider 组件](#/zh-CN/config-provider)。