Fixed architecture detection bug in Get-PEB
Fixed architecture detection bug in Get-PEB

I was checking processor architecture when I should have been checking
OS architecture.

azizjonm/PowerSploit,api0cradle/PowerSploit,demondayza/PowerSploit,amrme/PowerSploit,reuf/PowerSploit,efateva/PowerSploit,jorik041/PowerSploit,daviwesley/PowerSploit,indigosax/PowerSploit,NoobCam/PowerSploit,sammbertram/PowerSploit,z8oon/Powershell,chouchouzzj/Powershell,lamkeysing92/PowerSploit,hoangcuongflp/PowerSploit,coca1ne/PowerSploit,kk9599/PowerSploit,bmroberts1987/PowerSploit,adeptex/PowerSploit,brianaddicks/PowerSploit,PYANTSU/test,gabemarshall/PowerSploit,masterdon/PowerSploit,masterdon/PowerSploit,bmroberts1987/PowerSploit,sammbertram/PowerSploit,api0cradle/PowerSploit,jr69ss/PowerSploit,leverz/PowerSploit,leverz/PowerSploit,jakxx/PowerSploit,coca1ne/PowerSploit,jtaylo78/PowerSploit,indigosax/PowerSploit,forbidden-ali/PowerSploit,HarmJ0y/PowerSploit,j4s0nh4ck/PowerSploit,beni55/PowerSploit,daviwesley/PowerSploit,reuf/PowerSploit,secabstraction/PowerSploit,azizjonm/PowerSploit,ttyard/PowerSploit,gabemarshall/PowerSploit,xujun10110/PowerSploit,efateva/PowerSploit,HarmJ0y/PowerSploit,jtaylo78/PowerSploit,hoangcuongflp/PowerSploit,zigitax/PowerSploit,j4s0nh4ck/PowerSploit,brianaddicks/PowerSploit,chouchouzzj/Powershell,xujun10110/PowerSploit,demondayza/PowerSploit,ttyard/PowerSploit,z8oon/Powershell,mattifestation/PowerSploit,jakxx/PowerSploit,secabstraction/PowerSploit,mattifestation/PowerSploit,PYANTSU/test,NoobCam/PowerSploit,amrme/PowerSploit,forbidden-ali/PowerSploit,jorik041/PowerSploit,jr69ss/PowerSploit,adeptex/PowerSploit,beni55/PowerSploit,lamkeysing92/PowerSploit,zigitax/PowerSploit,kk9599/PowerSploit