Fix setup.cfg

AUTHORS

@@ -1,2 +1,6 @@
+Chris Sibbitt <csibbitt@redhat.com>
 Jaromír Wysoglad <jwysogla@redhat.com>
+Leif Madsen <leif@leifmadsen.com>
+Leif Madsen <lmadsen@redhat.com>
+Marihan Girgis mgirgisf@redhat.com
 Martin Mágr <mmagr@redhat.com>

setup.cfg

@@ -1,8 +1,8 @@
 [metadata]
 name = python-observabilityclient
 summary = OpenStack Observability Client
-description_file =
-    README.md
+long_description = file: README.md
+long_description_content_type = text/markdown; charset=UTF-8
 license = Apache License, Version 2.0
 author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
@@ -16,7 +16,6 @@ install_requires =
 classifier =
     Environment :: Console
     Environment :: OpenStack
-    Environment :: Infrawatch
     Intended Audience :: Developers
     Intended Audience :: Information Technology
     Intended Audience :: System Administrators