Make non-bulk slave purchases work again

src/005-passages/slaveMarketPassages.js

-new App.DomPassage("Market", () => App.Markets[V.market.slaveMarket](), ["jump-from-safe"]);
+new App.DomPassage("Market",
+	() => {
+		const span = App.UI.DOM.makeElement("span", App.Markets[V.market.slaveMarket]());
+		span.id = "slave-markets";
+		return span;
+	}, ["jump-from-safe"]
+);
 
 new App.DomPassage("Buy Slaves",
 	() => {