COUNTRY WEEK And they say Melinda was annoyingly humble.... ''It's her song, so I hope I make her proud,'' Jordin shrugged in her pre-show interview of covering ''A Broken Wing,'' originally sung by that week's guest mentor Martina McBride. Jordin's powerhouse version did one better by impressing even Simon: ''This is the first time since we have met where I actually believe, based on that performance, you could win American Idol,'' he said.