simplewallet: slightly adjust wording when printing multisig seed

src/simplewallet/simplewallet.cpp

@@ -2906,9 +2906,9 @@ bool simple_wallet::ask_wallet_create_if_needed()
  */
 void simple_wallet::print_seed(const epee::wipeable_string &seed)
 {
-  success_msg_writer(true) << "\n" << tr("NOTE: the following 25 words can be used to recover access to your wallet. "
+  success_msg_writer(true) << "\n" << boost::format(tr("NOTE: the following %s can be used to recover access to your wallet. "
     "Write them down and store them somewhere safe and secure. Please do not store them in "
-    "your email or on file storage services outside of your immediate control.\n");
+    "your email or on file storage services outside of your immediate control.\n")) % (m_wallet->multisig() ? tr("string") : tr("25 words"));
   // don't log
   int space_index = 0;
   size_t len  = seed.size();