South Africa has submitted to some of the world’s richest nations a revised plan for how it will spend a proposed $8.5-billion to help it transition away from coal, two people familiar with the situation said. The new draft — sent to funding partners the UK, US, France, Germany and the European Union — advances a process that’s been mired for almost a year in complex negotiations. The people, who asked not to be named because talks are ongoing, declined to give any detail on what the amendments involve.