fix formatting in documentation after #681 (#683)

Author: Nothing4You

docs/connection.rst

@@ -89,8 +89,9 @@ Example::
         (default: Server Default)
     :param program_name: Program name string to provide when
         handshaking with MySQL. (omitted by default)
-      .. versionchanged:: 1.0
-         ``sys.argv[0]`` is no longer passed by default
+
+        .. versionchanged:: 1.0
+            ``sys.argv[0]`` is no longer passed by default
     :param server_public_key: SHA256 authenticaiton plugin public key value.
     :param loop: asyncio event loop instance or ``None`` for default one.
     :returns: :class:`Connection` instance.