Update README.adoc

[GeorgePanaretos]

Update the README.adoc file for the below cases:

• To copy the command for Maven or Gradle to the terminal of the user's choice to run the application.
• Adding the http:// due to as it is in the guide it can be run only in the classic Command Prompt someone will deal with an error if tries for example to paste the command in the Intellij terminal or Windows Power Shell.

[GeorgePanaretos]

Additional note for the use of Spring Initializr in case the user selects the Spring 3.0

[Buzzardo]

Our usual fix for this is to remove the Java version from the Actuator link rather than add a note. Then the default Java version in the Initializr is correct.

[Buzzardo]

Now that I look more closely at the wording, I see that it should be:

NOTE: For Spring 3.0 you need Java 17 or later, regardless of whether you use Spring Initializr.

Sorry I didn't catch it the first time. I was focused on the Initializr link.

[Buzzardo]

Now that I look more closely at the wording, I see that it should be:

NOTE: For Spring 3.0 you need Java 17 or later, regardless of whether you use Spring Initializr.

Sorry I didn't catch it the first time. I was focused on the Initializr link.