Fix some markup nits
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index b7d282b..1998e23 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -91,8 +91,8 @@
\indexii{Boolean}{type}
\versionadded{2.2.1}
- If no argument is given, this function returns \code{False}.
- \versionchanged{2.3}
+ \versionchanged[If no argument is given, this function returns
+ \code{False}]{2.3}
\end{funcdesc}
\begin{funcdesc}{buffer}{object\optional{, offset\optional{, size}}}
@@ -687,8 +687,8 @@
to all instances of new style classes.
\versionadded{2.2}
-This function does not accept any arguments. \versionchanged{2.3}
-Formerly, it accepted arguments but ignored them.
+\versionchanged[This function does not accept any arguments.
+Formerly, it accepted arguments but ignored them]{2.3}
\end{funcdesc}
\begin{funcdesc}{oct}{x}