Update and refine the pre-initialized project URL

Author: sdeleuze

README.adoc

@@ -50,7 +50,7 @@ include::https://raw.githubusercontent.com/spring-guides/getting-started-macros/
 [[scratch]]
 == Starting with Spring Initializr
 
-You can use this https://start.spring.io/#!type=maven-project&language=java&platformVersion=2.5.5&packaging=jar&jvmVersion=11&groupId=com.example&artifactId=rest-service&name=rest-service&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.rest-service&dependencies=web[pre-initialized project] and click Generate to download a ZIP file. This project is configured to fit the examples in this tutorial.
+You can use this https://start.spring.io/#!type=maven-project&groupId=com.example&artifactId=rest-service&name=rest-service&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.rest-service&dependencies=web[pre-initialized project] and click Generate to download a ZIP file. This project is configured to fit the examples in this tutorial.
 
 To manually initialize the project: