Update README.md

[skip ci]

Author: edizor

scala-core-collections-2/README.md

@@ -6,3 +6,4 @@
 - [Get a Subarray in Scala](https://www.baeldung.com/scala/extract-subarray)
 - [Finding the First Element Matching a Condition in a Collection](https://www.baeldung.com/scala/find-first-match-in-collection)
 - [Append an Element to an Array in Scala](https://www.baeldung.com/scala/array-append-element)
+- [Create a Random Sample of Fixed Size From a Scala List](https://www.baeldung.com/scala/list-uniform-sample)