Does not pass given value when validating email address

Somewhat similar issue as #240, so I am keeping this short 😃

The documentation for the email-validator specifies the {1}-argument as the given value, but it is not interpolated into the message.

var validator = ValidatorBuilder.<String>of()
        .constraint((String email) -> email, "email",
                l -> l.email().message("{0} must be a valid email address, but was '{1}'"))
        .build();

var violation = validator.validate("@example.com").get(0);
assertThat(violation.message(), is("email must be a valid email address, but was '@example.com'"));

java.lang.AssertionError: 
Expected: is "email must be a valid email address, but was '@example.com'"
     but: was "email must be a valid email address, but was {1}"

Thought I’d also mention that the documentation for email-validator seems to be a little bit “off” as well, as it specifies the default message format as "{0}" must match {1}, but it does not make much sense to say "email" must match @example.com. However, the default message format seems to actually be "{0}" must be a valid email address, which is all fine, though it does not include the given value.

Thanks!

[making]

MessageFormat is used to interpolate by default and the javadoc says

Within a String, a pair of single quotes can be used to quote any arbitrary characters except single quotes. For example, pattern string “‘{0}’” represents string “{0}”, not a FormatElement. A single quote itself must be represented by doubled single quotes ‘’ throughout a String.

Use "{0} must be a valid email address, but was ''{1}''" instead

[runeflobakk]

Oh… I was not aware of that gotcha with MessageFormat. Then it works as expected! Thank you very much!