Fix classifier

Author: ZedThree

pyproject.toml

@@ -14,7 +14,7 @@ readme = "README.md"
 authors = [{name = "Peter Hill", email = "[email protected]"}]
 license = {text = "MIT"}
 classifiers = [
-    "Development Status :: 5 - Production/stable",
+    "Development Status :: 5 - Production/Stable",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.8",