Mark Arm MCP Server migration topic as draft

Set the draft status for the Arm MCP Server migration topic.

Author: pareenaverma

content/learning-paths/servers-and-cloud-computing/arm-mcp-server/_index.md

@@ -1,6 +1,10 @@
 ---
 title: Migrate an x86 application to Arm using the Arm MCP Server
 
+draft: true
+cascade:
+    draft: true
+
 minutes_to_complete: 20
 
 who_is_this_for: This is an introductory topic for software developers who want to use AI-powered tools to migrate x86 applications to Arm-based cloud instances.