Link Reit, Asia’s largest real estate investment trust, reported its second-lowest annual revenue growth ever because of the coronavirus pandemic, but said it was cautiously optimistic about its prospects amid the ongoing economic recovery.Revenue rose by 0.2 per cent year on year to HK$10.74 billion (US$1.38 billion) for the year ended March 2021, according to a filing to the Hong Kong stock exchange on Thursday.It was the smallest increase in revenue after the 0.1 per cent rise in 2019,…