fix: update linux for note on gradle/java (#108)

Author: aryzing

content/setup/linux.md

@@ -4,6 +4,7 @@ prev: /setup
 next: /creating-a-new-project
 contributors:
   - rigor789
+  - aryzing
 ---
 
 ## Setting up Linux for Android
@@ -62,6 +63,10 @@ OpenJDK 64-Bit Server VM (build 14.0.2+12-Ubuntu-120.04, mixed mode, sharing)
 javac 14.0.2
 ```
 
+:::tip Note
+NativeScript uses Gradle for Android builds. [Different versions of Gradle rely on certain versions of Java to work](https://docs.gradle.org/current/userguide/compatibility.html#java). If a build fails, check whether the version of Java installed on your system is compatible with the version of Gradle used by NativeScript. The version of Gradle used by NativeScript can be seen in the build logs or in the [source](https://github.com/NativeScript/android/blob/main/test-app/gradle/wrapper/gradle-wrapper.properties).
+:::
+
 Setting up the Android development environment can be daunting if you are new to Android development, however following the next steps carefully will get you up and running in no time.
 
 [Download and install Android Studio](https://developer.android.com/studio). In the installation wizard, make sure you have the following components selected (the list should appear if you select **custom** options):