remove unecessary filename prefixes in the html content handler

content/handlers/html/Makefile

@@ -6,18 +6,18 @@ S_HTML := box_construct.c	\
 	box_normalise.c		\
 	box_special.c		\
 	box_textarea.c		\
+	css.c			\
+	css_fetcher.c		\
 	font.c			\
 	form.c			\
-	imagemap.c		\
-	layout.c		\
-	search.c		\
-	table.c			\
+	forms.c			\
 	html.c			\
-	html_css.c		\
-	html_css_fetcher.c	\
-	html_script.c		\
+	imagemap.c		\
 	interaction.c		\
-	html_redraw.c		\
-	html_redraw_border.c	\
-	html_forms.c		\
-	html_object.c
+	layout.c		\
+	object.c		\
+	redraw.c		\
+	redraw_border.c		\
+	script.c		\
+	search.c		\
+	table.c