Update Gradle Dokka configuration to make sure "source" button is visible in all API docs

[whyoleg]

For context: Kotlin/kotlinx.coroutines#3929 and Kotlin/kotlinx.coroutines#3960

BTW, is there a reason why kover API reference is not published under https://kotlinlang.org/docs/home.html API reference section?

[whyoleg]

Simplified configuration based on: Kotlin/kotlinx-datetime#323 (comment)

Could you also help to understand how documentation is published and so where remoteUrl should be pointed, so it would be stable for current releases version?

[shanshin]

Could you also help to understand how documentation is published and so where remoteUrl should be pointed, so it would be stable for current releases version?

Documentation is now being generated and published manually, https://kotlin.github.io/kotlinx-kover/gradle-plugin/dokka/

The documentation for the stable version is currently under development and it has not yet been decided how and where it will be published. In the coming months, we will continue to publish as is