docs: collecting parameter docs + formatting

collecting-parameter/src/test/java/com/iluwatar/collectingparameter/PrinterQueueTest.java

@@ -27,8 +27,6 @@ package com.iluwatar.collectingparameter;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.Timeout;
-import java.util.LinkedList;
-import java.util.Queue;
 
 import static org.junit.jupiter.api.Assertions.*;