By Herbert Lash and Danilo Masoni NEW YORK/MILAN (Reuters) -World shares wavered and bond yields slid on Tuesday after a surprise rate hike in Australia unsettled investors, but Target Corp’s warning on profit margins also included plans to slash prices, a sign that inflation may be peaking. Target cut its quarterly profit margin forecast and said it would offer deeper discounts to clear inventory as decades-high inflation saps consumer demand. The surprise forecast revision sent shares of the retailer 3.5% lower and knocked the retail sector of the pan-European STOXX index down 0.9% as the an…