Mark Go GC behavior guide as draft

Set the draft status to true for the Go GC behavior guide.

Author: pareenaverma

content/learning-paths/servers-and-cloud-computing/go-gc-default-settings/_index.md

@@ -1,5 +1,9 @@
 ---
 title: Measure Go GC behavior on AWS Graviton
+draft: true
+cascade:
+    draft: true
+
 description: Learn how to measure and observe Go garbage collection metrics on AWS Graviton instances.
 
 minutes_to_complete: 75