Update _index.md

Author: pareenaverma

content/learning-paths/servers-and-cloud-computing/milvus-rag/_index.md

@@ -1,6 +1,10 @@
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 title: Build a Retrieval-Augmented Generation (RAG) application using Zilliz Cloud on Arm servers
 
+draft: true
+cascade:
+    draft: true
+
 minutes_to_complete: 20
 
 who_is_this_for: This is an introductory topic for software developers who want to create a RAG application on Arm servers.