Update README.md

Author: rcalago

core-kotlin-modules/core-kotlin-8/README.md

@@ -5,4 +5,5 @@
 - [Kotlin TODO() Function](https://www.baeldung.com/kotlin/todo)
 - [Comparator in Kotlin](https://www.baeldung.com/kotlin/comparator)
 - [Get the Line Number Where an Exception Was Thrown in Kotlin](https://www.baeldung.com/kotlin/exception-metadata)
+- [How to Get the Name of a Variable in Kotlin](https://www.baeldung.com/kotlin/reflection-variable-name)
 - More articles: [[<-- prev]](../core-kotlin-7)