By Mollie Quirk There is one way that Prince Harry and Meghan Markle could heal the ongoing royal rift while in Nigeria, claims an expert. The Duke and Duchess of Sussex are currently in Nigeria for a “royal tour” in all but name. The couple touched down in the West African country on Friday, with them embarking on several public engagements and appearances since. In Nigeria for the 10th anniversary of the Invictus Games, the Sussexes have made appearances at schools, given speeches on mental health, and attended a seated volleyball match. And with just mere hours remaining of their visit, the…