Revise documentation that mentions Gradle "compile" configuration

[dreis2211]

Hi,

afaik compile has been deprecated in favor of using api or implementation. In some places in the documentation the old approach is still mentioned:

dependencies {
	compile("org.springframework.boot:spring-boot-starter-actuator")
}

I specifically didn't open a PR directly, because I wanted to discuss first if we should stick to api or implementation here. api would be closer to the old approach, but implementation is generally preferable. What do you think?

Cheers,
Christoph

[wilkinsona]

Thanks, @dreis2211. I think we should use implementation. It's always right for a module that nothing else depends on. And it's a good starting point for a module with dependents as it will encourage people to think about what dependencies they want those dependents to receive transitively. They can then use the Java library plugin and api as appropriate.

[wilkinsona]

Closing in favour of #19797.