America’s employers posted fewer job openings in July than they had the previous month, a sign that hiring could cool in the coming months. There were 7.7 million open jobs in July, down from 7.9 million in June. The pace of hiring picked up, though, from June to July. Wednesday’s figures indicate that fewer companies are seeking to add workers despite recent data showing that consumer spending is still growing. Last week, the government estimated that the economy expanded at a healthy 3% annual rate in the April-June quarter. The number of job openings has been trending gradually down over the past year. Yet there are still roughly 1.1 job openings for every unemployed person, Wednesday’s report showed.