Fix "response HTML" message

In modules/exploits/multi/browser/firefox_xpi_bootstrapped_addon.rb.

Author: wvu

modules/exploits/multi/browser/firefox_xpi_bootstrapped_addon.rb

@@ -58,7 +58,7 @@ def on_request_uri(cli, request)
         send_redirect(cli, "#{get_resource}/")
       else
         # user has navigated
-        print_status("Sending response HTML." )
+        print_status("Sending HTML response." )
         send_response_html(cli, generate_html)
       end
     end