correct broken package metadata (#148)

* fix classifiers

* add `validate-pyproject` as a hook

Author: keewis

.pre-commit-config.yaml

@@ -22,6 +22,11 @@ repos:
         args: ["--option", "array_auto_collapse=false"]
       - id: taplo-lint
         args: ["--no-schema"]
+  - repo: https://github.com/abravalheri/validate-pyproject
+    rev: v0.23
+    hooks:
+      - id: validate-pyproject
+        additional_dependencies: ["validate-pyproject-schema-store[all]"]
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.9.9
     hooks:

pyproject.toml

@@ -8,7 +8,7 @@ authors = [
 readme = "README.rst"
 requires-python = ">=3.9"
 classifiers = [
-  "License :: OSI Approved :: MIT",
+  "License :: OSI Approved :: MIT License",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.9",