use rich markup for PEP reference (GH-7939)
authorBehzad B. Mokhtari <35877268+perplexionist@users.noreply.github.com>
Wed, 27 Jun 2018 03:57:39 +0000 (08:27 +0430)
committerBenjamin Peterson <benjamin@python.org>
Wed, 27 Jun 2018 03:57:39 +0000 (20:57 -0700)
commitdf748c20dabcec5a6e89e0dd74fff21110f8755a
tree827f68b986a27b55ae43e699feddf8a2d62e0217
parente7d3cccd8e0da93a15ca80f4b6aac2ca3435fd06
use rich markup for PEP reference (GH-7939)

it's better to refer to PEP with `pep` role in reStructuredText. It also links to the PEP page.
Doc/tutorial/modules.rst