address review: move part of Abstract to the Specification

Author: skirpichev

peps/pep-0791.rst

@@ -19,8 +19,6 @@ This PEP proposes a new module for number-theoretical, combinatorial and other
 functions defined for integer arguments, like
 :external+py3.14:func:`math.gcd` or :external+py3.14:func:`math.isqrt`.
 
-Suitable functions must be computed exactly, given sufficient time and memory.
-
 
 Motivation
 ==========
@@ -72,7 +70,8 @@ Their aliases in :external+py3.14:mod:`math` will be :term:`soft deprecated`.
 
 Module functions will accept integers and objects that implement the
 :external+py3.14:meth:`~object.__index__` method, which is used to convert the
-object to an integer number.
+object to an integer number.  Suitable functions must be computed exactly,
+given sufficient time and memory.
 
 Possible extensions for the new module and its scope are discussed in the
 `Open Issues <Open Issues_>`_ section.  New functions are not part of this