Merge pull request #268 from johnA1331/master

BAEL-31915 - add links to github-baeldung articles

Author: lor6

play-scala/README.md

@@ -4,3 +4,4 @@
 - [Building a REST API in Scala with Play Framework](https://www.baeldung.com/scala/play-rest-api)
 - [Access Play Configuration in Scala](https://www.baeldung.com/scala/access-play-configuration)
 - [Caching in Play Framework for Scala](https://www.baeldung.com/scala/play-caching)
+- [Error Handling in the Play Framework Using Scala](https://www.baeldung.com/scala/play-error-handling)

scala-core-4/README.md

@@ -6,3 +6,4 @@
 - [Implicitly in Scala](https://www.baeldung.com/scala/implicitly)
 - [Path-Dependent Types in Scala](https://www.baeldung.com/scala/path-dependent-types)
 - [Type Disjunction (Union Types) in Scala](https://www.baeldung.com/scala/type-disjunction)
+- [Private and Protected Constructors in Scala](https://www.baeldung.com/scala/private-protected-constructors)