(Refiles to add dropped letter in headline) (Reuters) – Two of the world’s richest people are pitching in ideas to tackle the issue of homelessness, suggesting that Twitter Inc convert its headquarters to a shelter home. Amazon.com Inc founder Jeff Bezos on Sunday backed an idea put forth by Elon Musk, who recently became Twitter’s largest shareholder, to convert the social networking firm’s San Francisco headquarters into a homeless shelter as few people are working there during the pandemic. Bezos tweeted https://twitter.com/JeffBezos/status/1513251374774972417 an article by technology-focus…