backlink updated

Author: collaboratewithakash

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

@@ -4,7 +4,7 @@ This module contains articles about the Java List collection
 
 ### Relevant Articles: 
 - [Java – Get Random Item/Element From a List](http://www.baeldung.com/java-random-list-element)
-- [Removing all Nulls from a List in Java](http://www.baeldung.com/java-remove-nulls-from-list)
+- [Removing All Nulls From a List in Java](https://www.baeldung.com/java-remove-nulls-from-list)
 - [Removing All Duplicates From a List in Java](https://www.baeldung.com/java-remove-duplicates-from-list)
 - [How to TDD a List Implementation in Java](http://www.baeldung.com/java-test-driven-list)
 - [Iterating Backward Through a List](http://www.baeldung.com/java-list-iterate-backwards)