Fix a couple of typos reported by Detlef Lannert
<lannert@lannert.rz.uni-duesseldorf.de>.
diff --git a/Doc/doc/doc.tex b/Doc/doc/doc.tex
index f7b90fa..869f1e5 100644
--- a/Doc/doc/doc.tex
+++ b/Doc/doc/doc.tex
@@ -496,8 +496,8 @@
programming languages or even Python.
\begin{macrodesc}{bifuncindex}{\p{name}}
- Add a index entry referring to a built-in function named
- \var{name}; parenthesis should not be included after
+ Add an index entry referring to a built-in function named
+ \var{name}; parentheses should not be included after
\var{name}.
\end{macrodesc}