documentationFileName no longer exists for multi-module documentation

[mattmook]

Describe the bug
The documentation at https://github.com/Kotlin/dokka#multi-module-projects suggests being able to set documentationFileName to override the module documentation file name.

documentationFileName no longer exists in 1.4.10 - indeed searching the source code in GitHub the only references to it I can find are in the documentation. It was present in the v1.4.0 release.

Expected behaviour
documentationFileName to exist or documentation to be updated to list the correct way of changing the module documentation file names to use.

Screenshots

To Reproduce
Use code from documentation in your root build.gradle.kts file.

Dokka configuration
Configuration of dokka used to reproduce the bug

tasks.dokkaHtmlMultiModule.configure {
    outputDirectory.set(buildDir.resolve("dokkaCustomMultiModuleOutput"))
    documentationFileName.set("README.md")
}

Installation

• Operating system: macOS
• Build tool: Gradle v6.6.1
• Dokka version: 1.4.10

[KotlinIsland]

changed here

[KotlinIsland]

02ccae1