Fix typo

java -> Java

Author: changeworld

articles/network-watcher/network-watcher-visualize-nsg-flow-logs-open-source-tools.md

@@ -35,7 +35,7 @@ By connecting NSG flow logs with the Elastic Stack, we can create a Kibana dashb
 
 #### Install Elasticsearch
 
-1. The Elastic Stack from version 5.0 and above requires Java 8. Run the command `java -version` to check your version. If you do not have java installed, refer to documentation on the [Azure-suppored JDKs](/azure/developer/java/fundamentals/java-support-on-azure).
+1. The Elastic Stack from version 5.0 and above requires Java 8. Run the command `java -version` to check your version. If you do not have Java installed, refer to documentation on the [Azure-suppored JDKs](/azure/developer/java/fundamentals/java-support-on-azure).
 2. Download the correct binary package for your system:
 
    ```bash