Also update systemd-with-workers contrib examples

contrib/systemd-with-workers/system/matrix-synapse-worker@.service

@@ -4,7 +4,8 @@ After=matrix-synapse.service
 BindsTo=matrix-synapse.service
 
 [Service]
-Type=simple
+Type=notify
+NotifyAccess=main
 User=matrix-synapse
 WorkingDirectory=/var/lib/matrix-synapse
 EnvironmentFile=/etc/default/matrix-synapse

contrib/systemd-with-workers/system/matrix-synapse.service

@@ -2,7 +2,8 @@
 Description=Synapse Matrix Homeserver
 
 [Service]
-Type=simple
+Type=notify
+NotifyAccess=main
 User=matrix-synapse
 WorkingDirectory=/var/lib/matrix-synapse
 EnvironmentFile=/etc/default/matrix-synapse