adapted Javadoc slightly

src/main/java/envoy/data/LoginCredentials.java

@@ -28,8 +28,8 @@ public class LoginCredentials implements Serializable {
 	 *
 	 * @param identifier   the identifier of the user
 	 * @param password     the password of the user (will be converted to a hash)
-	 * @param registration if true, the user registers himself with this
-	 *                     {@link LoginCredentials}
+	 * @param registration signifies that these credentials are used for user
+	 *                     registration instead of user login
 	 * @throws NoSuchAlgorithmException if the algorithm used is unknown
 	 * @since Envoy Common v0.2-alpha
 	 */