Fix traceback rendering in errors.rst

nicoddemus · Scott Sanderson · commit 7ab8e1a6298d · 2018-08-28T15:53:59.000-04:00
diff --git a/docs/errors.rst b/docs/errors.rst
@@ -105,6 +105,7 @@ implementation attribute must also be a :class:`property`:
            return "Ludwig Wittgenstein"
 
 ::
+
    Traceback (most recent call last):
      ...
    interface.interface.InvalidImplementation:
