Add package name (TheAlgorithms#5007)

Author: inishantjain

src/test/java/com/thealgorithms/searches/PerfectBinarySearchTest.java

@@ -1,6 +1,7 @@
+package com.thealgorithms.searches;
+
 import static org.junit.jupiter.api.Assertions.*;
 
-import com.thealgorithms.searches.PerfectBinarySearch;
 import org.junit.jupiter.api.Test;
 
 /**