docs: fix output directory path style

Author: 3w36zj6

website/typst-docs-web/README.md

@@ -67,7 +67,7 @@ bun install --frozen-lockfile
 ### Develop
 
 > [!NOTE]
-> The full-text search index is generated by [pagefind](https://pagefind.app/), but since the output directory is set to `dist/`, full-text search functionality is currently unavailable in the development server. For developing search-related features, please execute `bun run build` first, then use `bun run preview` to inspect the built output.
+> The full-text search index is generated by [pagefind](https://pagefind.app/), but since the output directory is set to `/dist/`, full-text search functionality is currently unavailable in the development server. For developing search-related features, please execute `bun run build` first, then use `bun run preview` to inspect the built output.
 
 ```sh
 bun run dev