uses public repo url for badge

Author: aschuman0

README.rst

@@ -1,5 +1,5 @@
-.. image:: https://github.com/urbanairship/python-library-dev/actions/workflows/ci.yaml/badge.svg
-    :target: https://github.com/urbanairship/python-library-dev/
+.. image:: https://github.com/urbanairship/python-library/actions/workflows/ci.yaml/badge.svg
+    :target: https://github.com/urbanairship/python-library/
 =====
 
 ``urbanairship`` is a Python library for using the `Airship