Update hdinsight-release-notes.md

Editorial corrections.

Author: mimig1

articles/hdinsight/hdinsight-release-notes.md

@@ -43,13 +43,13 @@ No behavior changes for this release. To get ready for upcoming changes, see [Up
 The following changes will happen in upcoming releases. 
 
 ### Deprecation of Spark 2.1 and 2.2 in HDInsight 3.6 Spark cluster
-Starting from July 1 2020, customers will not be able to create new Spark clusters with Spark 2.1 and 2.2 on HDInsight 3.6. Existing clusters will run as is without the support from Microsoft. Consider to move to Spark 2.3 on HDInsight 3.6 by June 30 2020 to avoid potential system/support interruption.
+Starting July 1, 2020, customers will not be able to create new Spark clusters with Spark 2.1 and 2.2 on HDInsight 3.6. Existing clusters will run as is without support from Microsoft. Consider moving to Spark 2.3 on HDInsight 3.6 by June 30, 2020 to avoid potential system/support interruption.
 
 ### Deprecation of Spark 2.3 in HDInsight 4.0 Spark cluster
-Starting from July 1 2020, customers will not be able to create new Spark clusters with Spark 2.3 on HDInsight 4.0. Existing clusters will run as is without the support from Microsoft. Consider moving to Spark 2.4 on HDInsight 4.0 by June 30 2020 to avoid potential system/support interruption.
+Starting July 1, 2020, customers will not be able to create new Spark clusters with Spark 2.3 on HDInsight 4.0. Existing clusters will run as is without support from Microsoft. Consider moving to Spark 2.4 on HDInsight 4.0 by June 30, 2020 to avoid potential system/support interruption.
 
 ### Deprecation of Kafka 1.1 in HDInsight 4.0 Kafka cluster
-Starting from July 1 2020, customers will not be able to create new Kafka clusters with Kafka 1.1 on HDInsight 4.0. Existing clusters will run as is without the support from Microsoft. Consider moving to Kafka 2.1 on HDInsight 4.0 by June 30 2020 to avoid potential system/support interruption.
+Starting July 1 2020, customers will not be able to create new Kafka clusters with Kafka 1.1 on HDInsight 4.0. Existing clusters will run as is without support from Microsoft. Consider moving to Kafka 2.1 on HDInsight 4.0 by June 30 2020 to avoid potential system/support interruption.
 
 ### HBase 2.0 to 2.1.6
 In the upcoming HDInsight 4.0 release, HBase version will be upgraded from version 2.0 to 2.1.6