Delete the extra "or" in front of the second url (#1194)

Author: jonnygrout

jupyter_server/serverapp.py

@@ -2147,7 +2147,7 @@ def display_url(self):
         """Human readable string with URLs for interacting
         with the running Jupyter Server
         """
-        url = self.public_url + "\n or " + self.local_url
+        url = self.public_url + "\n    " + self.local_url
         return url
 
     @property