Update quickstart-java.md

Upgrade the version number of the web app plugin

Author: Elvira-sxr

articles/app-service/containers/quickstart-java.md

@@ -48,19 +48,19 @@ az login
 
 Then you can configure the deployment, run the maven command in the Command Prompt and use the default configurations by pressing **ENTER** until you get the **Confirm (Y/N)** prompt, then press **'y'** and the configuration is done. 
 ```cmd
-mvn com.microsoft.azure:azure-webapp-maven-plugin:1.9.0:config
+mvn com.microsoft.azure:azure-webapp-maven-plugin:1.9.1:config
 ```
 A sample process looks like:
 
 ```cmd
-~@Azure:~/helloworld$ mvn com.microsoft.azure:azure-webapp-maven-plugin:1.9.0:config
+~@Azure:~/helloworld$ mvn com.microsoft.azure:azure-webapp-maven-plugin:1.9.1:config
 [INFO] Scanning for projects...
 [INFO]
 [INFO] ----------------------< example.demo:helloworld >-----------------------
 [INFO] Building helloworld Maven Webapp 1.0-SNAPSHOT
 [INFO] --------------------------------[ war ]---------------------------------
 [INFO]
-[INFO] --- azure-webapp-maven-plugin:1.9.0:config (default-cli) @ helloworld ---
+[INFO] --- azure-webapp-maven-plugin:1.9.1:config (default-cli) @ helloworld ---
 [WARNING] The plugin may not work if you change the os of an existing webapp.
 Define value for OS(Default: Linux):
 1. linux [*]