Update Testing-in-K1-Locally.md

Author: teodor-i

Writerside/topics/Testing-in-K1-Locally.md

@@ -2,7 +2,7 @@
 
 From IntelliJ IDEA version 2025.3, K2 mode is the default. If you need to test the plugin in K1 mode locally, pass the -Didea.kotlin.plugin.use.k1=true VM option to the IntelliJ IDEA run configuration or to the test task.
 
-> If you are using IntelliJ IDEA version 2025.2 or older, use -Didea.kotlin.plugin.use.k2=false to enable K1 mode.
+> If you use IntelliJ IDEA version 2025.2 or older, use -Didea.kotlin.plugin.use.k2=true to enable K2 mode.
 
 When using the [IntelliJ Platform Gradle Plugin](https://github.com/JetBrains/intellij-platform-gradle-plugin), you can specify the option directly in the `build.gradle.kts`
 file.