fix traefik compose file

Author: CodeShellDev

examples/traefik.docker-compose.yaml

@@ -4,7 +4,8 @@ services:
     container_name: secured-signal
     environment:
       API__URL: http://signal-api:8080
-      SETTINGS__VARIABLES__RECIPIENTS: ["123400002", "123400003", "123400004"]
+      SETTINGS__VARIABLES__RECIPIENTS:
+        ["+123400002", "+123400003", "+123400004"]
       SETTINGS__VARIABLES__NUMBER: "+123400001"
       API__TOKENS: [LOOOOOONG_STRING]
     labels: