updating landing page

Author: hrasheed-msft

articles/hdinsight/index.yml

@@ -124,8 +124,8 @@ landingContent:
             url: ./kafka/apache-kafka-get-started.md
       - linkListType: concept
         links:
-          - text: Upgrade 3.6 to 4.0
-            url: ./kafka/upgrade-threesix-to-four.md
+          - text: Migrate 3.6 to 4.0
+            url: ./kafka/migrate-versions.md
           - text: Optimize Kafka performance
             url: ./kafka/apache-kafka-performance-tuning.md
           - text: Kafka scalability