link to kmp tutorial (#4689)

Author: ElviraMustafina

docs/topics/jvm/jvm-test-using-junit.md

@@ -1,8 +1,9 @@
 [//]: # (title: Test code using JUnit in JVM – tutorial)
 
-This tutorial shows you how to write a simple unit test and run it with the Gradle build tool.
+This tutorial shows you how to write a simple unit test in a Kotlin/JVM project and run it with the Gradle build tool.
 
-The example in the tutorial has the [`kotlin.test`](https://kotlinlang.org/api/latest/kotlin.test/index.html) library under the hood and runs the test using JUnit.
+In this project, you'll use the [`kotlin.test`](https://kotlinlang.org/api/latest/kotlin.test/index.html) library and run the test using JUnit.
+If you're working on a multiplatform app, see the [Kotlin Multiplatform tutorial](https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-run-tests.html).
 
 To get started, first download and install the latest version of [IntelliJ IDEA](https://www.jetbrains.com/idea/download/index.html).