Update apache-spark-troubleshoot-job-fails-noclassdeffounderror.md

Author: v-akarnase

articles/hdinsight/spark/apache-spark-troubleshoot-job-fails-noclassdeffounderror.md

@@ -24,9 +24,9 @@ Stack trace: ExitCodeException exitCode=50:
 
 ## Cause
 
-This error can be caused by specifying a version of the `spark-streaming-kafka` jar file that is different than the version of the Kafka cluster you are running.
+This error can be caused by specifying a version of the `spark-streaming-kafka` jar file that is different than the version of the Kafka cluster you're running.
 
-For example, if you are running a Kafka cluster version 0.10.1, the following command will result in an error:
+For example, if you're running a Kafka cluster version 0.10.1, the following command results in an error:
 
 ```
 spark-submit \
@@ -38,7 +38,7 @@ spark-submit \
 
 ## Resolution
 
-Use the Spark-submit command with the `–packages` option, and ensure that the version of the spark-streaming-kafka jar file is the same as the version of the Kafka cluster that you are running.
+Use the `Spark-submit` command with the `–packages` option, and ensure that the version of the spark-streaming-kafka jar file is the same as the version of the Kafka cluster that you are running.
 
 ## Next steps