Fix config error that can cause Mjolnir to crash

roles/matrix-bot-mjolnir/templates/production.yaml.j2

@@ -239,8 +239,8 @@ health:
 # Whether or not to actively poll synapse for abuse reports, to be used
 # instead of intercepting client calls to synapse's abuse endpoint, when that
 # isn't possible/practical.
-pollReports: true
+pollReports: false
 
 # Whether or not new reports, received either by webapi or polling,
 # should be printed to our managementRoom.
-displayReports: true
+displayReports: false