Wrexham took a giant step towards promotion on Saturday afternoon, coming from a goal down to beat Colchester United 2-1 away from home. Wrexham’s away day record has been patchy at best and Tuesday’s 1-0 defeat at Doncaster Rovers left supporters fearing another difficult outing in Essex. Those fans probably had a sinking feeling on Saturday as John Akinde smashed home a bouncing ball, firing Colchester ahead as Wrexham failed to clear the ball. Wrexham needed a big response in order to avoid another away day defeat and Paul Mullin stepped up, powering a header in from Ryan Barnett’s cross. P…