kotlin.md: update 'org.jetbrains.intellij' to 0.4.2
kotlin.md: update 'org.jetbrains.intellij' to 0.4.2

JetBrains/intellij-sdk-docs,JetBrains/intellij-sdk-docs,JetBrains/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs,artspb/intellij-sdk-docs