Is "Peacemakers" a mistaken reference to Peacekeepers?

The term also appears on one other occasion, in the first novel in the series.

“Thank you,” I say. The baker’s not a very talkative man in the best of times, and today he has no words at all. “I had some of your bread this morning. My friend Gale gave you a squirrel for it.” He nods, as if remembering the squirrel. “Not your best trade,” I say. He shrugs as if it couldn’t possibly matter.

Then I can’t think of anything else, so we sit in silence until a Peacemaker summons him. He rises and coughs to clear his throat. “I’ll keep an eye on the little girl. Make sure she’s eating.”

_{^{The Hunger Games}}

Note that only four paragraphs earlier the same set of government soldiers are referred to as "Peacekeepers" so it's not in the least bit clear what, if any, difference there is between a 'Peacekeeper' and a 'Peacemaker'.

“I love you. I love you both.” And they’re saying it back and then the Peacekeeper orders them out and the door closes. I bury my head in one of the velvet pillows as if this can block the whole thing out.

At the very least we can probably rule out that it's an editorial (or authorial) mistake since it occurs in novels written more than a year apart and edited by two different sets of publishers.