Update pyproject.toml

Author: jaepil

pyproject.toml

@@ -18,7 +18,7 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "Framework :: AsyncIO",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: Apache Software License 2.0",
+    "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",