update docker-compose.yml to use Normal Mode by default

docker-compose.yml

@@ -1,7 +1,7 @@
 services:
   bentopdf:
-  # default mode
-  # simple mode - bentopdf-simple:latest
+  # simple mode - bentopdf/bentopdf-simple:latest
+  # default mode - bentopdf/bentopdf:latest
     image: bentopdf/bentopdf-simple:latest
     container_name: bentopdf
     restart: unless-stopped