Prince Harry and Meghan Markle will undertake a “tour” of Nigeria next month, just days after the Duke’s visit to the U.K on May 8. This led one royal analyst to claim the duo is trying to “one-up” the British royal family, particularly the senior royals, who have not toured a foreign nation in over six months. Royal commentator Charlotte Griffiths dished: “Of course, they never try anything other than get a one-up on the royal family but I think what they’re really doing is on paper, they’re trying to celebrate 10 years of Invictus Games.” The expert then shared: “Let’s face it, the real reas…