chore: fixed badge of README.md

Author: wey-gu

README.md

@@ -22,7 +22,7 @@ def test_users(pglite_session):
 
 [![CI](https://github.com/wey-gu/py-pglite/actions/workflows/ci.yml/badge.svg)](https://github.com/wey-gu/py-pglite/actions/workflows/ci.yml) [![PyPI](https://badge.fury.io/py/py-pglite.svg)](https://badge.fury.io/py/py-pglite) [![Python](https://img.shields.io/pypi/pyversions/py-pglite.svg)](https://pypi.org/project/py-pglite/)
 
-[![License](https://img.shields.io/pypi/l/py-pglite.svg)](https://github.com/wey-gu/py-pglite/blob/main/LICENSE) [![MyPy](https://img.shields.io/badge/type_checked-mypy-informational.svg)](https://mypy.readthedocs.io/en/stable/introduction.html) [![Ruff](https://img.shields.io/badge/style-ruff-blue?logo=ruff&logoColor=white)](https://github.com/astral-sh/ruff) [![codecov]([![codecov](https://codecov.io/github/wey-gu/py-pglite/graph/badge.svg)](https://codecov.io/github/wey-gu/py-pglite))](https://codecov.io/github/wey-gu/py-pglite)
+[![License](https://img.shields.io/pypi/l/py-pglite.svg)](https://github.com/wey-gu/py-pglite/blob/main/LICENSE) [![MyPy](https://img.shields.io/badge/type_checked-mypy-informational.svg)](https://mypy.readthedocs.io/en/stable/introduction.html) [![Ruff](https://img.shields.io/badge/style-ruff-blue?logo=ruff&logoColor=white)](https://github.com/astral-sh/ruff) [![codecov](https://codecov.io/github/wey-gu/py-pglite/graph/badge.svg)](https://codecov.io/github/wey-gu/py-pglite)
 
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