Refactor docker-compose.yml to remove unnecessary colons in network configuration

docker-compose.yml

@@ -23,7 +23,7 @@ services:
       - POSTGRES_USER=iralex
       - POSTGRES_PASSWORD=${DB_PASSWORD}
     networks:
-      - iralex_local_network:
+      - iralex_local_network
   redis:
     image: redis:6
     container_name: iralex_local_redis
@@ -31,7 +31,7 @@ services:
       - '6379:6379'
     restart: unless-stopped
     networks:
-      - iralex_local_network:
+      - iralex_local_network
   mongodb:
     image: mongo:6.0.3
     restart: unless-stopped
@@ -44,7 +44,7 @@ services:
     volumes:
       - iralex_local_mongodb_data:/data/db
     networks:
-      - iralex_local_network:
+      - iralex_local_network
   django:
     build:
       context: .