[N-0] refactor 13

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_13.java

@@ -3,9 +3,13 @@
 import java.util.HashMap;
 import java.util.Map;
 
-/**Given a roman numeral, convert it to an integer.
+/**
+ * 13. Roman to Integer
+ *
+ * Given a roman numeral, convert it to an integer.
+ * Input is guaranteed to be within the range from 1 to 3999.
+ * */
 
- Input is guaranteed to be within the range from 1 to 3999.*/
 public class _13 {
 
     public int romanToInt(String s) {