fix err in Makefile.am. Change etats.h to etags.h

edit/Makefile.am

@@ -10,6 +10,6 @@ libedit_a_SOURCES = \
 	bookmark.c edit.c editcmd.c editwidget.c editdraw.c editkeys.c \
 	editmenu.c editoptions.c editcmddef.h edit.h edit-widget.h \
 	editlock.c editlock.h syntax.c usermap.h usermap.c wordproc.c \
-	choosesyntax.c etags.c etats.h
+	choosesyntax.c etags.c etags.h
 
 EXTRA_DIST = ChangeLog