Moves admins definition as it seems on some distributions after latest lua updates, causes trouble for prosody.

doc/debian/jitsi-meet-prosody/prosody.cfg.lua-jvb.example

@@ -16,6 +16,7 @@ VirtualHost "jitmeet.example.com"
         }
 
 Component "conference.jitmeet.example.com" "muc"
+admins = { "focusUser@auth.jitmeet.example.com" }
 
 Component "jitsi-videobridge.jitmeet.example.com"
     component_secret = "jitmeetSecret"
@@ -23,7 +24,5 @@ Component "jitsi-videobridge.jitmeet.example.com"
 VirtualHost "auth.jitmeet.example.com"
         authentication = "internal_plain"
 
-admins = { "focusUser@auth.jitmeet.example.com" }
-
 Component "focus.jitmeet.example.com"
     component_secret = "focusSecret"