setup: Fix the license

Change-Id: I09d829d815d580a73254f04549f33ba46b9921d2
diff --git a/setup.py b/setup.py
index 2445964..35b68ee 100755
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
         'Intended Audience :: Developers',
         'Topic :: Software Development',
         'Topic :: Utilities',
-        'License :: OSI Approved :: Apache License',
+        'License :: OSI Approved :: Apache Software License',
         'Operating System :: POSIX',
         'Programming Language :: Python :: 3',
     ],