typo

Author: mahtin

setup.py

@@ -44,7 +44,7 @@ def main():
             'Topic :: Software Development :: Libraries :: Python Modules',
             'License :: OSI Approved :: MIT License',
             'Programming Language :: Python',
-            'Programming Language :: Python :: 3'
+            'Programming Language :: Python :: 3',
             'Programming Language :: Python :: 3.5',
             'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',