Corrects documentation. Thanks Meatballs1

lib/msf/core/exploit/http/server.rb

@@ -806,7 +806,7 @@ protected
 	# For IE, your web server has to return this header to download binary data:
 	# "text/plain; charset=x-user-defined"
 	#    <script>
-	#    #{js_download}
+	#    #{js_ajax_download}
 	#
 	#    ajax_download({path:"/test.bin"});
 	#    </script>