Update codestyle

src/main/java/seedu/address/model/person/Remark.java

@@ -6,10 +6,17 @@
  */
 public class Remark {
     public final String value;
+
+    /**
+     * Constructs an {@code Remark}.
+     *
+     * @param remark A any string value.
+     */
     public Remark(String remark) {
         requireNonNull(remark);
         value = remark;
     }
+
     @Override
     public String toString() {
         return value;
@@ -24,4 +31,4 @@ public boolean equals(Object other) {
     public int hashCode() {
         return value.hashCode();
     }
-}
+}