Fix the indentation

Author: warsaw

peps/pep-0813.rst

@@ -1,4 +1,4 @@
-PEP: 813
+813: PEP
 Title: The Pretty Print Protocol
 Author: Barry Warsaw <barry@python.org>, Eric V. Smith <eric@trueblade.com>
 Discussions-To: https://discuss.python.org/t/pep-813-the-pretty-print-protocol/106242
@@ -184,7 +184,7 @@ with the ``name`` being ``None`` or the empty string.
     ...
     >>> from rich.pretty import pprint
     >>> pprint(Things())
-Things((1, 2), (3, 4), arg=(5, 6))
+    Things((1, 2), (3, 4), arg=(5, 6))
 
 
 Backwards Compatibility