[3.13] gh-133046: Reformat the ``ast`` module docstring (GH-133050) (GH-133060)

gh-133046: Reformat the ``ast`` module docstring (GH-133050)

* Fix formatting in module docstring for `ast` https://github.com/python/cpython/issues/133046
* GH-133046 ast docstring: remove header, dedent, 80-char width.
* Keep existing wrapping

---------
(cherry picked from commit 6d53b752831c453da115dd4ce54a0d121d9990cd)

Co-authored-by: Hunter Hogan <hunterhogan@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+aa-turner@users.noreply.github.com>

diff --git a/Lib/ast.py b/Lib/ast.py
index 2bf08c86b6e5bf48b0a19ca76bd54b035621bd05..1a88d23c585202410e464e099dfe78bb72babe32 100644 (file)
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -1,28 +1,24 @@
 """
-    ast
-    ~~~
-
-    The `ast` module helps Python applications to process trees of the Python
-    abstract syntax grammar.  The abstract syntax itself might change with
-    each Python release; this module helps to find out programmatically what
-    the current grammar looks like and allows modifications of it.
-
-    An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
-    a flag to the `compile()` builtin function or by using the `parse()`
-    function from this module.  The result will be a tree of objects whose
-    classes all inherit from `ast.AST`.
-
-    A modified abstract syntax tree can be compiled into a Python code object
-    using the built-in `compile()` function.
-
-    Additionally various helper functions are provided that make working with
-    the trees simpler.  The main intention of the helper functions and this
-    module in general is to provide an easy to use interface for libraries
-    that work tightly with the python syntax (template engines for example).
-
-
-    :copyright: Copyright 2008 by Armin Ronacher.
-    :license: Python License.
+The `ast` module helps Python applications to process trees of the Python
+abstract syntax grammar.  The abstract syntax itself might change with
+each Python release; this module helps to find out programmatically what
+the current grammar looks like and allows modifications of it.
+
+An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
+a flag to the `compile()` builtin function or by using the `parse()`
+function from this module.  The result will be a tree of objects whose
+classes all inherit from `ast.AST`.
+
+A modified abstract syntax tree can be compiled into a Python code object
+using the built-in `compile()` function.
+
+Additionally various helper functions are provided that make working with
+the trees simpler.  The main intention of the helper functions and this
+module in general is to provide an easy to use interface for libraries
+that work tightly with the python syntax (template engines for example).
+
+:copyright: Copyright 2008 by Armin Ronacher.
+:license: Python License.
 """
 import sys
 import re