style: format code (#4212)

close #4204

src/test/java/com/thealgorithms/strings/ValidParenthesesTest.java

@@ -1,24 +1,23 @@
 package com.thealgorithms.strings;
 
-import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.*;
 
+import org.junit.jupiter.api.Test;
+
 public class ValidParenthesesTest {
-	
+
     @Test
     void testOne() {
         assertEquals(true, ValidParentheses.isValid("()"));
     }
-  
+
     @Test
     void testTwo() {
         assertEquals(true, ValidParentheses.isValid("()[]{}"));
     }
-  
-  
+
     @Test
     void testThree() {
         assertEquals(false, ValidParentheses.isValid("(]"));
     }
-	
 }