Combat V
He apparently earned one for the Bronze Star, the bitch is about the nonexistent one for the Silver Star on his DD214.
Combat "V" (or in the Army, "V" for Valor) is awarded on the Bronze Star to distinguish it from a Bronze Star awarded for "Meritorious Service". It's the "V" that shows up on his DD214 for the Silver Star (there's no such animal) that is in question.
Personally, I doubt that Kerry 'doctored' his DD214. It's probably an error made by some yeoman when Kerry was being released from active duty.