fix: resolve checkstyle issues - add newlines and remove trailing spaces

Author: kokatesaurabh

src/main/java/com/thealgorithms/dynamicprogramming/RegularExpressionMatching.java

@@ -41,4 +41,4 @@ private boolean dp(final int i, final int j, final String s, final String p, fin
         memo[i][j] = ans;
         return ans;
     }
-}
+}

src/test/java/com/thealgorithms/dynamicprogramming/RegularExpressionMatchingTest.java

@@ -12,7 +12,7 @@ public class RegularExpressionMatchingTest {
     @Test
     public void testBasicCases() {
         final RegularExpressionMatching matcher = new RegularExpressionMatching();
-        
+
         // Test cases from the problem
         assertFalse(matcher.isMatch("aa", "a"));
         assertTrue(matcher.isMatch("aa", "a*"));
@@ -25,4 +25,4 @@ public void testBasicCases() {
         assertTrue(matcher.isMatch("", ""));
         assertFalse(matcher.isMatch("abcd", "d*"));
     }
-}
+}