Update README.md

Author: bangseongbeom

README.md

@@ -5,20 +5,26 @@
 [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 [![CI](https://github.com/urlpattern/python-urlpattern/actions/workflows/CI.yml/badge.svg)](https://github.com/urlpattern/python-urlpattern/actions)
 
-This library is an implementation of [the URL Pattern Standard](https://urlpattern.spec.whatwg.org/) for Python written in Rust.
+An implementation of [the URL Pattern Standard](https://urlpattern.spec.whatwg.org/) for Python written in Rust
+
+## Introduction
 
 It provides a pattern matching syntax like `/users/:id/`, similar to [Express](https://expressjs.com/) or [Path-to-RegExp](https://github.com/pillarjs/path-to-regexp) in Node.js. You can use it as a foundation to build your own web server or framework.
 
 It's a thin wrapper of [denoland/rust-urlpattern](https://github.com/denoland/rust-urlpattern) with [PyO3](https://github.com/PyO3/pyo3) + [Maturin](https://github.com/PyO3/maturin).
 
-## Example
+## Examples
 
 ```py
 from urlpattern import URLPattern
 
 pattern = URLPattern("https://example.com/admin/*")
 print(pattern.test("https://example.com/admin/main/"))  # output: True
 print(pattern.test("https://example.com/main/"))  # output: False
+```
+
+```py
+from urlpattern import URLPattern
 
 pattern = URLPattern({"pathname": "/users/:id/"})
 result = pattern.exec({"pathname": "/users/4163/"})
@@ -42,3 +48,5 @@ py -m pip install urlpattern
 ## Limitations
 
 Due to limitations in the dependency [denoland/rust-urlpattern](https://github.com/denoland/rust-urlpattern), it may not support all features specified in [the standard](https://urlpattern.spec.whatwg.org/).
+
+Check the limitations in [`tests/test_lib.py`](tests/test_lib.py).