Fix typo in project configuration
@@ -20,7 +20,7 @@ classifiers = [
"Intended Audience :: Education",
"Intended Audience :: Science/Research",
"License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",
- "Operating System : MacOS :: MacOS X",
+ "Operating System :: MacOS :: MacOS X",
"Operating System :: POSIX :: Linux",
"Programming Language :: Python :: 3.8",
"Topic :: Education :: Testing",
