Fix index entry for HTMLParser class.
diff --git a/Doc/libformatter.tex b/Doc/libformatter.tex
index 4440815..25e68d6 100644
--- a/Doc/libformatter.tex
+++ b/Doc/libformatter.tex
@@ -7,7 +7,7 @@
implementations. The \emph{formatter} interface is used by the
\class{HTMLParser} class of the \module{htmllib} module, and the
\emph{writer} interface is required by the formatter interface.
-\withsubitem{(im module htmllib)}{\ttindex{HTMLParser}}
+\withsubitem{(class in htmllib)}{\ttindex{HTMLParser}}
Formatter objects transform an abstract flow of formatting events into
specific output events on writer objects. Formatters manage several