Highlight the warning in README (#297)

Author: Goooler

README.md

@@ -5,16 +5,18 @@
 [![KDoc link](https://img.shields.io/badge/API_reference-KDoc-blue)](https://kotlin.github.io/binary-compatibility-validator/)
 
 # Support for this plugin has been discontinued
-The development of a separate binary compatibility validator Gradle plugin has been discontinued, 
-and all its functionality will be moved to Kotlin Gradle Plugin starting from the `2.2.0` release.
 
-As part of the migration, the code of the current plugin has been migrated to [the Kotlin repository](https://github.com/JetBrains/kotlin/tree/master/libraries/tools/abi-validation), 
-as well as issues migrated to [the Kotlin project in YouTrack](https://youtrack.jetbrains.com/issues/KT?q=subsystems:%20%7BTools.%20BCV%7D,%20%7BTools.%20Gradle.%20BCV%7D).
-
-This plugin is frozen from changes, no new features or minor bugfixes will be added to it.
-
-The functionality of working with the ABI in Kotlin Gradle Plugin is in an experimental state now, 
-so it is recommended to continue using this plugin in production projects until KGP API stabilization.
+> [!WARNING]
+> The development of a separate binary compatibility validator Gradle plugin has been discontinued, 
+> and all its functionality will be moved to Kotlin Gradle Plugin starting from the `2.2.0` release.
+> 
+> As part of the migration, the code of the current plugin has been migrated to [the Kotlin repository](https://github.com/JetBrains/kotlin/tree/master/libraries/tools/abi-validation), 
+> as well as issues migrated to [the Kotlin project in YouTrack](https://youtrack.jetbrains.com/issues/KT?q=subsystems:%20%7BTools.%20BCV%7D,%20%7BTools.%20Gradle.%20BCV%7D).
+> 
+> This plugin is frozen from changes, no new features or minor bugfixes will be added to it.
+> 
+> The functionality of working with the ABI in Kotlin Gradle Plugin is in an experimental state now, 
+> so it is recommended to continue using this plugin in production projects until KGP API stabilization.
 
 # Binary compatibility validator