+ corrected pyproject classifiers (#120)

Author: jonsedar

pyproject.toml

@@ -14,8 +14,7 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Financial and Insurance Industry",
-    "License-Expression :: Apache Software License",
-    "License-File :: LICENSE.md",
+    "License :: Apache Software License",
     "Natural Language :: English",
     "Operating System :: MacOS",
     "Operating System :: Unix",