fix: resolve @tiny-design/icons from source in docs app

- Add Vite alias for @tiny-design/icons pointing to source directory
- Fix self-closing <br /> tags in icon docs for MDX compatibility

Author: wangdicoder

apps/docs/vite.config.ts

@@ -6,6 +6,7 @@ import rehypeMdxCodeProps from 'rehype-mdx-code-props';
 import path from 'path';
 
 const reactSrc = path.resolve(__dirname, '../../packages/react/src');
+const iconsSrc = path.resolve(__dirname, '../../packages/icons/src');
 
 export default defineConfig({
   plugins: [
@@ -21,6 +22,7 @@ export default defineConfig({
   resolve: {
     alias: {
       '@tiny-design/react': reactSrc,
+      '@tiny-design/icons': iconsSrc,
     },
     dedupe: ['react', 'react-dom'],
   },

packages/react/src/icon/index.md

@@ -12,6 +12,7 @@ SVG icon components from `@tiny-design/icons`. Each icon is its own module, so b
 ```bash
 $ pnpm add @tiny-design/icons
 ```
+<br />
 
 ```jsx
 import { IconClose, IconPlus } from '@tiny-design/icons';

packages/react/src/icon/index.zh_CN.md

@@ -12,6 +12,7 @@ import SvgIconList from './demo/svg-icons.tsx'
 ```bash
 $ pnpm add @tiny-design/icons
 ```
+<br />
 
 ```jsx
 import { IconClose, IconPlus } from '@tiny-design/icons';