[Python-checkins] Use mdash-es consistently in the library docs index (GH-92762)

[miss-islington]

https://github.com/python/cpython/commit/da4912885f11f525a82a83f795ebffba06560e13
commit: da4912885f11f525a82a83f795ebffba06560e13
branch: 3.10
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-07-08T07:50:56-07:00
summary:

Use mdash-es consistently in the library docs index (GH-92762)

(cherry picked from commit efb20a97c491821acb03564f526afaf9eed47eef)

Co-authored-by: Oleg Iarygin <oleg at arhadthedev.net>

files:
M Doc/library/2to3.rst

diff --git a/Doc/library/2to3.rst b/Doc/library/2to3.rst
index 5e1b010e9bb5f..e9becb0738237 100644
--- a/Doc/library/2to3.rst
+++ b/Doc/library/2to3.rst
@@ -1,7 +1,7 @@
 .. _2to3-reference:
 
-2to3 - Automated Python 2 to 3 code translation
-===============================================
+2to3 --- Automated Python 2 to 3 code translation
+=================================================
 
 .. sectionauthor:: Benjamin Peterson <benjamin at python.org>
 
@@ -451,8 +451,8 @@ and off individually.  They are described here in more detail.
    ``from future_builtins import zip`` appears.
 
 
-:mod:`lib2to3` - 2to3's library
--------------------------------
+:mod:`lib2to3` --- 2to3's library
+---------------------------------
 
 .. module:: lib2to3
    :synopsis: The 2to3 library