Added a callout for Removal Policy

Author: AnilMaktala

src/pages/[platform]/build-a-backend/data/custom-business-logic/search-and-aggregate-queries/index.mdx

@@ -148,13 +148,24 @@ const openSearchDomain = new opensearch.Domain(
   {
     version: opensearch.EngineVersion.OPENSEARCH_2_11,
     nodeToNodeEncryption: true,
+    // set removalPolicy to DESTROY for sandbox environemnt
+    // removalPolicy: RemovalPolicy.DESTROY,
     encryptionAtRest: {
       enabled: true
     }
   }
 );
 // highlight-end
 ```
+<Callout>
+
+Important considerations:
+
+We recommend enabling the `removalPolicy` for sandbox environments.
+By default, OpenSearch instances are not deleted when you run `npx ampx delete`, as the default removal policy is set to retain the resource.
+
+</Callout>
+
 
 ## Step 3: Setting Up Zero ETL from DynamoDB to OpenSearch
 
@@ -220,6 +231,8 @@ const openSearchDomain = new opensearch.Domain(
   {
     version: opensearch.EngineVersion.OPENSEARCH_2_11,
     nodeToNodeEncryption: true,
+    // set removalPolicy to DESTROY for sandbox environemnt
+    // removalPolicy: RemovalPolicy.DESTROY,
     encryptionAtRest: {
       enabled: true,
     },