fix some markup errors
diff --git a/Doc/lib/libxmlrpclib.tex b/Doc/lib/libxmlrpclib.tex
index 7af9e76..1aa2dd5 100644
--- a/Doc/lib/libxmlrpclib.tex
+++ b/Doc/lib/libxmlrpclib.tex
@@ -287,7 +287,7 @@
Create an object used to boxcar method calls. \var{server} is the
eventual target of the call. Calls can be made to the result object,
-but they will immediately return \var{None}, and only store the
+but they will immediately return \code{None}, and only store the
call name and parameters in the \class{MultiCall} object. Calling
the object itself causes all stored calls to be transmitted as
a single \code{system.multicall} request. The result of this call