fix: fix extras_require typo in setup.py (#242)

Author: parthea

setup.py

@@ -75,7 +75,7 @@
     packages=packages,
     namespace_packages=namespaces,
     install_requires=dependencies,
-    extras_requires=extras,
+    extras_require=extras,
     python_requires=">=3.6",
     scripts=[
         "scripts/fixup_securitycenter_v1_keywords.py",