Merge pull request #12317 from Asjad-J/master

Updated README.md

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

@@ -5,4 +5,5 @@ This module contains articles about the Java List collection
 ### Relevant Articles: 
 - [Working With a List of Lists in Java](https://www.baeldung.com/java-list-of-lists)
 - [Reverse an ArrayList in Java](https://www.baeldung.com/java-reverse-arraylist)
+- [Sort a List Alphabetically in Java](https://www.baeldung.com/java-sort-list-alphabetically)
 - [[<-- Prev]](/core-java-modules/core-java-collections-list-3)

java-numbers-4/README.md

@@ -9,3 +9,4 @@
 - [Convert boolean to int in Java](https://www.baeldung.com/java-boolean-to-int)
 - [Generate a Random Value From an Enum](https://www.baeldung.com/java-enum-random-value)
 - [Reverse a Number in Java](https://www.baeldung.com/java-reverse-number)
+- [Check if BigDecimal Value Is Zero](https://www.baeldung.com/java-bigdecimal-zero)

javax-servlets-2/README.md

@@ -4,3 +4,4 @@ This module contains articles about Servlets.
 
 ### Relevant Articles:
 - [Check if a User Is Logged-in With Servlets and JSP](https://www.baeldung.com/servlets-jsp-check-user-login)
+- [How to Mock HttpServletRequest](https://www.baeldung.com/java-httpservletrequest-mock)

spring-cloud-modules/spring-cloud-docker/README.md

@@ -1,3 +1,4 @@
 ## Relevant Articles:
 
 - [Dockerizing a Spring Boot Application](https://www.baeldung.com/dockerizing-spring-boot-application)
+- [Docker Compose Restart Policies](https://www.baeldung.com/ops/docker-compose-restart-policies)