BAEL-2363 BAEL-2337 BAEL-1996 BAEL-2277 Update README (#5973)

* BAEL-2246: add link back to article

* BAEL-2174: rename core-java-net module to core-java-networking

* BAEL-2174: add link back to article

* BAEL-2363 BAEL-2337 BAEL-1996 BAEL-2277 add links back to articles

algorithms-miscellaneous-1/README.md

@@ -10,4 +10,6 @@
 - [Multi-Swarm Optimization Algorithm in Java](http://www.baeldung.com/java-multi-swarm-algorithm)
 - [String Search Algorithms for Large Texts](http://www.baeldung.com/java-full-text-search-algorithms)
 - [Check If a String Contains All The Letters of The Alphabet](https://www.baeldung.com/java-string-contains-all-letters)
-- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
+- [Find the Middle Element of a Linked List](http://www.baeldung.com/java-linked-list-middle-element)
+- [Calculate Factorial in Java](https://www.baeldung.com/java-calculate-factorial)
+- [Find Substrings That Are Palindromes in Java](https://www.baeldung.com/java-palindrome-substrings)

jhipster/README.md

@@ -2,3 +2,4 @@
 
 - [JHipster with a Microservice Architecture](http://www.baeldung.com/jhipster-microservices)
 - [Intro to JHipster](http://www.baeldung.com/jhipster)
+- [Building a Basic UAA-Secured JHipster Microservice](https://www.baeldung.com/jhipster-uaa-secured-micro-service)

spring-5-reactive/README.md

@@ -17,4 +17,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [A Guide to Spring Session Reactive Support: WebSession](https://www.baeldung.com/spring-session-reactive)
 - [Validation for Functional Endpoints in Spring 5](https://www.baeldung.com/spring-functional-endpoints-validation)
 - [Logging a Reactive Sequence](https://www.baeldung.com/spring-reactive-sequence-logging)
-
+- [Testing Reactive Streams Using StepVerifier and TestPublisher](https://www.baeldung.com/reactive-streams-step-verifier-test-publisher)