Is the readme right to say the processor dependency should be `implementation`? I noticed that leaks...

# ksp

[Zac Sweers]

Is the readme right to say the processor dependency should be implementation? I noticed that leaks it transitively to any downstream consumers of the original consuming project. Changing to compileOnly works fine for me in that case

[Jiaxiang]

That's a good point, actually I am not expertise on Gradle build model, will update the doc after researching it.