HOTFIX: missing quote in pyproject config

Author: danielogen

pyproject.toml

@@ -16,7 +16,7 @@ readme = "PyReprism is a Python framework that helps researchers and developers
 requires-python = ">=3.6"
 classifiers = [
     "Environment :: Console",
-    "Development Status :: 5 - Stable,
+    "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",
     "Programming Language :: Python :: 3",