Update passwords.md

docs/services/passwords.md

@@ -94,10 +94,12 @@ The Password app is monitored by the UIS infra-sas
 [nagios service](https://nagios.uis.cam.ac.uk/nagios/).
 
 Sevices currently monitored:
+
 * ping - standard nagios ping check.
 * SSL - checks for a valid SSL certificate.
 * devgroup - checks for a 200 response from the /adm/status page.
 * disc-space - checks for at least 15% free disk space.
+
 ### Debugging
 
 The Password app cannot be run locally, and therefore the test instance should