Patch 1494554: Update numeric properties to Unicode 4.1.
diff --git a/Doc/api/concrete.tex b/Doc/api/concrete.tex
index 8390a72..10247ab 100644
--- a/Doc/api/concrete.tex
+++ b/Doc/api/concrete.tex
@@ -965,7 +965,7 @@
 \end{cfuncdesc}
 
 \begin{cfuncdesc}{double}{Py_UNICODE_TONUMERIC}{Py_UNICODE ch}
-  Return the character \var{ch} converted to a (positive) double.
+  Return the character \var{ch} converted to a double.
   Return \code{-1.0} if this is not possible.  This macro does not raise
   exceptions.
 \end{cfuncdesc}