Fix the wrong docker pull command

Error response from daemon: manifest for xxx.azurecr.io/gs-spring-boot-docker:v1 not found: manifest unknown: manifest tagged by "v1" is not found

Author: andxu

articles/container-registry/container-registry-java-quickstart.md

@@ -146,7 +146,7 @@ Finally, you'll update your project configuration and use the command prompt to
 Congratulations! Now you have your containerized Java App build on Azure supported JDK pushed to your ACR. You can now test the image by deploying it to Azure App Service, or pulling it to local with command (replacing the placeholder):
 
 ```bash
-docker pull <your registry name>.azurecr.io/gs-spring-boot-docker:v1
+docker pull <your registry name>.azurecr.io/gs-spring-boot-docker
 ```
 
 ## Next steps