Correct platform name
Correct platform name

Just spotted in a CI log that I'd used an invalid platform name here - I guess I missed the 'skipped' message before in amongst all the 'Explict' tests.
JustinRChou/nunit,jadarnel27/nunit,nunit/nunit,agray/nunit,OmicronPersei/nunit,mjedrzejek/nunit,mjedrzejek/nunit,jadarnel27/nunit,appel1/nunit,JustinRChou/nunit,mikkelbu/nunit,mikkelbu/nunit,NikolayPianikov/nunit,appel1/nunit,OmicronPersei/nunit,agray/nunit,ggeurts/nunit,ggeurts/nunit,agray/nunit,NikolayPianikov/nunit,nunit/nunit