chore: update ADL

Author: patwlan

static/adl/index.html

@@ -1413,6 +1413,7 @@ <h2 data-typing-title class="text-3xl font-extrabold text-nature-dark tracking-t
   -e <span class="text-nature-sky">ARC_AI_KEY</span>=<span class="text-nature-light">[OPENAI_API_KEY]</span> \
   -e <span class="text-nature-sky">ARC_MODEL</span>=<span class="text-nature-light">gpt-4o</span> \
   -e <span class="text-nature-sky">ARC_CLIENT</span>=<span class="text-nature-light">openai</span> \
+  -e <span class="text-nature-sky">MCP_SERVER</span>=<span class="text-nature-light">(optional MCP Server)</span> \
   ghcr.io/eclipse-lmos/adl-server:latest
 </pre>
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