bpo-35431: Put math.comb() docs in correct place alphabetically

Doc/library/math.rst

@@ -36,6 +36,21 @@ Number-theoretic and representation functions
    :class:`~numbers.Integral` value.
 
 
+.. function:: comb(n, k)
+
+   Return the number of ways to choose *k* items from *n* items without repetition
+   and without order.
+
+   Also called the binomial coefficient. It is mathematically equal to the expression
+   ``n! / (k! (n - k)!)``. It is equivalent to the coefficient of the *k*-th term in the
+   polynomial expansion of the expression ``(1 + x) ** n``.
+
+   Raises :exc:`TypeError` if the arguments not integers.
+   Raises :exc:`ValueError` if the arguments are negative or if *k* > *n*.
+
+   .. versionadded:: 3.8
+
+
 .. function:: copysign(x, y)
 
    Return a float with the magnitude (absolute value) of *x* but the sign of
@@ -232,21 +247,6 @@ Number-theoretic and representation functions
    :meth:`x.__trunc__() <object.__trunc__>`.
 
 
-.. function:: comb(n, k)
-
-   Return the number of ways to choose *k* items from *n* items without repetition
-   and without order.
-
-   Also called the binomial coefficient. It is mathematically equal to the expression
-   ``n! / (k! (n - k)!)``. It is equivalent to the coefficient of the *k*-th term in the
-   polynomial expansion of the expression ``(1 + x) ** n``.
-
-   Raises :exc:`TypeError` if the arguments not integers.
-   Raises :exc:`ValueError` if the arguments are negative or if *k* > *n*.
-
-   .. versionadded:: 3.8
-
-
 Note that :func:`frexp` and :func:`modf` have a different call/return pattern
 than their C equivalents: they take a single argument and return a pair of
 values, rather than returning their second return value through an 'output