Document Ratiomal.numerator/denominator, remove from Fraction docs

Author: skirpichev

Doc/library/fractions.rst

@@ -119,15 +119,6 @@ another rational number, or from a string.
       The :class:`Fraction` constructor now accepts any objects with the
       :meth:`!as_integer_ratio` method.
 
-   .. attribute:: numerator
-
-      Numerator of the Fraction in lowest term.
-
-   .. attribute:: denominator
-
-      Denominator of the Fraction in lowest term.
-
-
    .. method:: as_integer_ratio()
 
       Return a tuple of two integers, whose ratio is equal

Doc/library/numbers.rst

@@ -69,11 +69,11 @@ The numeric tower
 
    .. attribute:: numerator
 
-      Abstract.
+      Abstract.  The numerator of this rational number.
 
    .. attribute:: denominator
 
-      Abstract.
+      Abstract.  The denominator of this rational number.
 
 
 .. class:: Integral