Correct two typos
diff --git a/Doc/libaudioop.tex b/Doc/libaudioop.tex
index 13a82b3..40ef0f4 100644
--- a/Doc/libaudioop.tex
+++ b/Doc/libaudioop.tex
@@ -153,7 +153,7 @@
converter returns a tupl \code{(\var{newfragment}, \var{newstate})},
and \var{newstate} should be passed to the next call of ratecv.
-The \code{weightA} and \coden{weightB} arguments are parameters for a
+The \code{weightA} and \code{weightB} arguments are parameters for a
simple digital filter and default to 1 and 0 respectively.
\end{funcdesc}