Merge pull request #11296 from johnA1331/master

BAEL-41828 - add links to github-baeldung articles

core-java-modules/core-java-collections-maps-4/README.md

@@ -3,4 +3,4 @@
 This module contains articles about Map data structures in Java.
 
 ### Relevant Articles: 
-- [Using a Custom Class as a Key in a Java HashMap](https://www.baeldung.com/custom-key-hashmap)
+- [Using a Custom Class as a Key in a Java HashMap](https://www.baeldung.com/java-custom-class-map-key)

core-java-modules/core-java-lang-3/README.md

@@ -2,7 +2,7 @@
 
 This module contains articles about core features in the Java language
 
-- [Class.isInstance vs Class.isAssignableFrom](https://www.baeldung.com/java-isinstance-isassignablefrom)
+- [Class.isInstance vs Class.isAssignableFrom and instanceof](https://www.baeldung.com/java-isinstance-isassignablefrom)
 - [Converting a Java String Into a Boolean](https://www.baeldung.com/java-string-to-boolean)
 - [When are Static Variables Initialized in Java?](https://www.baeldung.com/java-static-variables-initialization)
 - [Checking if a Class Exists in Java](https://www.baeldung.com/java-check-class-exists)

grpc/README.md

@@ -6,3 +6,4 @@ This module contains articles about gRPC
 
 - [Introduction to gRPC](https://www.baeldung.com/grpc-introduction)
 - [Streaming with gRPC in Java](https://www.baeldung.com/java-grpc-streaming)
+- [Error Handling in gRPC](https://www.baeldung.com/grpcs-error-handling)

persistence-modules/hibernate-exceptions/README.md

@@ -2,4 +2,5 @@
 
 - [Hibernate could not initialize proxy – no Session](https://www.baeldung.com/hibernate-initialize-proxy-exception)
 - [Hibernate Error “No Persistence Provider for EntityManager”](https://www.baeldung.com/hibernate-no-persistence-provider)
-- [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception)
+- [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception)
+- [Hibernate’s “Object References an Unsaved Transient Instance” Error](https://www.baeldung.com/hibernate-unsaved-transient-instance-error)

spring-security-modules/spring-security-web-boot-3/README.md

@@ -8,4 +8,5 @@ The "REST With Spring" Classes: http://github.learnspringsecurity.com
 ### Relevant Articles:
 
 - [TLS Setup in Spring](https://www.baeldung.com/spring-tls-setup)
+- [Spring Security – Request Rejected Exception](https://www.baeldung.com/spring-security-request-rejected-exception)
 - More articles: [[<-- prev]](/spring-security-modules/spring-security-web-boot-2)