Update examples

examples/ssh-login-alert/ntfy-ssh-login.sh

@@ -2,6 +2,8 @@
 # This is a PAM script hook that shows how to notify you when
 # somebody logs into your server. Place at /usr/local/bin/ntfy-ssh-login.sh (with chmod +x!).
 
+TOPIC_URL=ntfy.sh/alerts
+
 if [ "${PAM_TYPE}" = "open_session" ]; then
-  echo -en "\u26A0\uFE0F SSH login to $(hostname): ${PAM_USER} from ${PAM_RHOST}" | curl -T- ntfy.sh/alerts
+  curl -H tags:warning -H prio:high -d "SSH login to $(hostname): ${PAM_USER} from ${PAM_RHOST}" "${TOPIC_URL}"
 fi