Update hdinsight-overview.md

Author: sreekzz

articles/hdinsight/hdinsight-overview.md

@@ -16,15 +16,15 @@ Azure HDInsight is a managed, full-spectrum, open-source analytics service in th
 
 The following points should be considered before starting to create a cluster
 
-1. Bring Your Own Database
+1. Bring your own database
 
 By default, HDInsight creates a default database during creation. Databases cant' be changed after the cluster is created.
 
 We recommend using custom databases for Ambari, Hive, and Ranger. 
 
 To learn more on how to [Set up HDInsight clusters with a custom Ambari DB](/azure/hdinsight/hdinsight-custom-ambari-db.md) and [Use external metadata stores in Azure HDInsight](/azure/hdinsight/hdinsight-use-external-metadata-stores.md)
 
-1. Keep your cluster up to date
+2. Keep your clusters up to date
 
 To take advantage of the latest HDInsight features, we recommend regularly migrating your HDInsight clusters to the latest version. HDInsight doesn't support in-place upgrades where existing clusters are upgraded to new component versions. You need to create a new cluster with the desired components and platform version and migrate your application to use the new cluster.
 
@@ -131,9 +131,9 @@ Familiar business intelligence (BI) tools retrieve, analyze, and report data tha
 
 ## In-region data residency 
 
-Spark, Hadoop, and LLAP don't store customer data, so these services automatically satisfy in-region data residency requirements including those criterias specified in the [Trust Center](https://azuredatacentermap.azurewebsites.net/). 
+Spark, Hadoop, and LLAP don't store customer data, so these services automatically satisfy in-region data residency requirements specified in the [Trust Center](https://azuredatacentermap.azurewebsites.net/). 
 
-Kafka and HBase do store customer data. This data is automatically stored by Kafka and HBase in a single region, so this service satisfies in-region data residency requirements including those criterias specified in the [Trust Center](https://azuredatacentermap.azurewebsites.net/). 
+Kafka and HBase do store customer data. This data is automatically stored by Kafka and HBase in a single region, so this service satisfies in-region data residency requirements specified in the [Trust Center](https://azuredatacentermap.azurewebsites.net/). 
 
 Familiar business intelligence (BI) tools retrieve, analyze, and report data that is integrated with HDInsight by using either the Power Query add-in or the Microsoft Hive ODBC Driver.