add model comment in compose file

Author: commit111

samples/managed-llm-provider/compose.yaml

@@ -9,6 +9,7 @@ services:
     environment:
       - ENDPOINT_URL=http://llm/api/v1/chat/completions   # endpoint to the Provider Service
       - MODEL=us.amazon.nova-micro-v1:0  # LLM model ID used in the Provider Service
+      # For other models, see https://docs.defang.io/docs/concepts/managed-llms/openai-access-gateway#model-mapping
     healthcheck:
       test: ["CMD", "python3", "-c", "import sys, urllib.request; urllib.request.urlopen(sys.argv[1]).read()", "http://localhost:8000/"]
       interval: 30s

samples/managed-llm/compose.yaml

@@ -8,7 +8,8 @@ services:
     restart: always
     environment:
       - ENDPOINT_URL=http://llm/api/v1/chat/completions   # endpoint to the gateway service
-      - MODEL=us.amazon.nova-micro-v1:0  # LLM model ID used for the gateway
+      - MODEL=us.amazon.nova-micro-v1:0  # LLM model ID used for the gateway. 
+       # For other models, see https://docs.defang.io/docs/concepts/managed-llms/openai-access-gateway#model-mapping
       - OPENAI_API_KEY=FAKE_TOKEN   # the actual value will be ignored when using the gateway, but it should match the one in the llm service
     healthcheck:
       test: ["CMD", "python3", "-c", "import sys, urllib.request; urllib.request.urlopen(sys.argv[1]).read()", "http://localhost:8000/"]