By Josh O’Brien Wrexham have been promoted for the second successive season after a sensational 6-0 home win over Forest Green. The result means the Red Dragons will be playing League One football next season, thanks in part to MK Dons being beaten by Mansfield on Saturday afternoon. The news will undoubtedly delight the club’s co-owners Ryan Reynolds and Rob McElhenney, who have overseen quite the journey in their time in the boardroom. After 15 years out of the Football League, last season’s promotion ended that wait but Wrexham are already up and out of League Two. The game that got them up…