Merge pull request #16375 from eugenp/lor6-patch-5

Update README.md

Author: lor6

testing-modules/mockito-2/README.md

@@ -12,3 +12,5 @@ This module contains articles about Mockito
 - [Verify That Lambda Expression Was Called Using Mockito](https://www.baeldung.com/java-mockito-verify-lambda-expression)
 - [Injecting @Mock and @Captor in JUnit 5 Method Parameters](https://www.baeldung.com/junit-5-mock-captor-method-parameter-injection)
 - [Fix Ambiguous Method Call Error in Mockito](https://www.baeldung.com/mockito-fix-ambiguous-method-call-error)
+- [Multiple-Level Mock Injection Into Mockito Spy Objects](https://www.baeldung.com/mockito-multiple-level-mock-injection)
+