Fix solutions for 05_ticket_v2\01_enum

[Wenxing-hou]

Refer to the main code:

100-exercises-to-learn-rust/exercises/05_ticket_v2/01_enum/src/lib.rs

Lines 31 to 39 in 21f3427

	if status != "To-Do" && status != "In Progress" && status != "Done" {
	panic!("Only `To-Do`, `In Progress`, and `Done` statuses are allowed");
	}
	Ticket {
	title,
	description,
	status,
	}

It is better to fix the check rather than delete it.

Signed-off-by: Wenxing Hou [email protected]