More NaN consistency doc fixes.
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 2c6e51c..4b3d6d9 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -375,9 +375,9 @@
:exc:`ValueError` for invalid operations like ``sqrt(-1.0)`` or ``log(0.0)``
(where C99 Annex F recommends signaling invalid operation or divide-by-zero),
and :exc:`OverflowError` for results that overflow (for example,
- ``exp(1000.0)``). A *NaN* will not be returned from any of the functions
- above unless one or more of the input arguments was a *NaN*; in that case,
- most functions will return a *NaN*, but (again following C99 Annex F) there
+ ``exp(1000.0)``). A NaN will not be returned from any of the functions
+ above unless one or more of the input arguments was a NaN; in that case,
+ most functions will return a NaN, but (again following C99 Annex F) there
are some exceptions to this rule, for example ``pow(float('nan'), 0.0)`` or
``hypot(float('nan'), float('inf'))``.