Remove the extra colon

alerts/ssh_access.json

@@ -1,6 +1,6 @@
 {
     "watchlist": [
         {"hostname": "nagios1.small.corp.com", "ipaddress": "11.22.33.44"},
-        {"hostname:": "nagios2.super.corp.com", "ipaddress":"11.22.33.45"}
+        {"hostname": "nagios2.super.corp.com", "ipaddress": "11.22.33.45"}
     ]
 }