add title for resolved alerts

templates/rocketchat-bot.py.j2

@@ -132,9 +132,9 @@ def postAlertmanager(chatName):
 
 
 def send_alert_message(channel, alert):
-    message = "[**{state}**] [{instance}] {here}".format(state=alert['status'],
+    message = "[**{state}**] [{instance}] {amendment}".format(state=alert['status'],
                                                          instance=alert['labels'].get('instance', 'unknown'),
-                                                         here='@here' if alert['status'] == 'firing' else '')
+                                                         amendment='@here' if alert['status'] == 'firing' else alert['annotations'].get('title'))
     attach = []
 
     # attach details if alert is firing