jabber: reload prosody when updating cert

hosts/jabber/default.nix

@@ -46,6 +46,7 @@ in
     # DynDNS method
     dnsProvider = "rfc2136";
     credentialsFile = config.sops.secrets."acme/credentials-file".path;
+    reloadServices = [ "prosody" ];
     # Make keys accessible by putting them in prosody's group
     inherit (config.services.prosody) group;
   };