Fix LaTeX oversight.
diff --git a/Doc/lib/libsgmllib.tex b/Doc/lib/libsgmllib.tex
index cae6821..1578313 100644
--- a/Doc/lib/libsgmllib.tex
+++ b/Doc/lib/libsgmllib.tex
@@ -102,7 +102,7 @@
as well as known character references and known entity references
terminated by a semicolon (normally, entity references can be terminated
by any non-alphanumerical character, but this would break the very
-common case of \code{<A HREF="url?spam=1&eggs=2">} when \code{eggs}
+common case of \code{<A HREF="url?spam=1\&eggs=2">} when \code{eggs}
is a valid entity name).
For instance, for the tag \code{<A HREF="http://www.cwi.nl/">}, this