Replace badge table with flat badge layout and restore icon width to 200px

The badge table was a workaround for RST rendering issues on GitHub.
Now that the README is Markdown, badges can be displayed as plain
centered lines without a table.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: laughingman7743

README.md

@@ -2,13 +2,18 @@
 
 <div align="center">
 
-<img src="docs/_static/icon.png" alt="PyAthena logo" width="150">
+<img src="docs/_static/icon.png" alt="PyAthena logo" width="200">
 
-| | |
-| --- | --- |
-| Package | [![PyPI - Version](https://badge.fury.io/py/pyathena.svg)](https://badge.fury.io/py/pyathena) [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/PyAthena.svg)](https://pypi.org/project/PyAthena/) [![PyPI - Downloads](https://static.pepy.tech/badge/pyathena/month)](https://pepy.tech/project/pyathena) |
-| CI/CD | [![CI - Test](https://github.com/laughingman7743/PyAthena/actions/workflows/test.yaml/badge.svg)](https://github.com/laughingman7743/PyAthena/actions/workflows/test.yaml) [![CD - Docs](https://github.com/laughingman7743/PyAthena/actions/workflows/docs.yaml/badge.svg)](https://github.com/laughingman7743/PyAthena/actions/workflows/docs.yaml) |
-| Meta | [![License - MIT](https://img.shields.io/pypi/l/PyAthena.svg)](https://github.com/laughingman7743/PyAthena/blob/master/LICENSE) [![linting - 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) [![types - Mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://mypy-lang.org/) |
+[![PyPI - Version](https://badge.fury.io/py/pyathena.svg)](https://badge.fury.io/py/pyathena)
+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/PyAthena.svg)](https://pypi.org/project/PyAthena/)
+[![PyPI - Downloads](https://static.pepy.tech/badge/pyathena/month)](https://pepy.tech/project/pyathena)
+
+[![CI - Test](https://github.com/laughingman7743/PyAthena/actions/workflows/test.yaml/badge.svg)](https://github.com/laughingman7743/PyAthena/actions/workflows/test.yaml)
+[![CD - Docs](https://github.com/laughingman7743/PyAthena/actions/workflows/docs.yaml/badge.svg)](https://github.com/laughingman7743/PyAthena/actions/workflows/docs.yaml)
+
+[![License - MIT](https://img.shields.io/pypi/l/PyAthena.svg)](https://github.com/laughingman7743/PyAthena/blob/master/LICENSE)
+[![linting - 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)
+[![types - Mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://mypy-lang.org/)
 
 </div>