Fix markup and wording.
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index a5be90e..98c5b33 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -326,8 +326,8 @@
Return the complementary error function at *x*. The `complementary error
function <http://en.wikipedia.org/wiki/Error_function>`_ is defined as
- ``1.0 - erf(x)``. It is used for large values of *x* where a straight
- substraction from *1* would cause a `loss of significance
+ ``1.0 - erf(x)``. It is used for large values of *x* where a subtraction
+ from one would cause a `loss of significance
<http://en.wikipedia.org/wiki/Loss_of_significance>`_\.
.. versionadded:: 3.2
@@ -335,7 +335,8 @@
.. function:: gamma(x)
- Return the `Gamma function<http://en.wikipedia.org/wiki/Gamma_function>` at *x*.
+ Return the `Gamma function <http://en.wikipedia.org/wiki/Gamma_function>`_ at
+ *x*.
.. versionadded:: 3.2