fix typo

--- a/doc-src/Nitpick/nitpick.tex	Tue Aug 31 23:46:23 2010 +0200
+++ b/doc-src/Nitpick/nitpick.tex	Tue Aug 31 23:50:40 2010 +0200
@@ -1921,7 +1921,7 @@
 \end{enum}
 
 Default values are indicated in square brackets. Boolean options have a negated
-counterpart (e.g., \textit{blocking} vs.\ \textit{no\_blocking}). When setting
+counterpart (e.g., \textit{blocking} vs.\ \textit{non\_blocking}). When setting
 Boolean options, ``= \textit{true}'' may be omitted.
 
 \subsection{Mode of Operation}