docs: add more links for contributing to Kotlin/Native

docs/contributing.md

@@ -43,6 +43,8 @@ Some of the code in the standard library is created by generating code from temp
 
 Also the [JavaScript back-end](https://github.com/JetBrains/kotlin/blob/master/js/ReadMe.md) could really use your help. See the [JavaScript contribution section](https://github.com/JetBrains/kotlin/blob/master/js/ReadMe.md) for more details.
 
+You can also [contribute to Kotlin/Native](../kotlin-native/README.md).
+
 If you want to contribute a new language feature, it is important to discuss it through a [KEEP](https://github.com/Kotlin/KEEP) first and get an approval from the language designers. This way you'll make sure your work will be in line with the overall language evolution plan and no other design decisions or considerations will block its acceptance.
 
 ## Submitting patches

kotlin-native/README.md

@@ -29,6 +29,13 @@ and [Kotlin Multiplatform](https://kotlinlang.org/docs/multiplatform.html).
 
 On macOS Kotlin/Native requires Xcode 12.5 or newer.
 
+## Contributing
+
+You can contribute to Kotlin/Native in many ways.
+See the relevant page [on the website](https://kotlinlang.org/docs/contribute.html).
+
+See also the general [contribution guidelines](../docs/contributing.md) for this repository.
+
 ## Building from source
 
 Prerequisites:
@@ -89,3 +96,8 @@ See the [documentation](https://kotlinlang.org/docs/native-c-interop.html) for m
 For tests, use `./gradlew :native:native.tests:codegenBoxTest` and `./gradlew :kotlin-native:backend.native:tests:run`.
 
 For more details see [Testing](HACKING.md#Testing).
+
+## More tips and tricks
+
+More tips and tricks that might be useful when developing or debugging Kotlin/Native
+can be found in [HACKING.md](HACKING.md)