Update 20486C_MOD12_LAK.md
Update 20486C_MOD12_LAK.md

resolving bugs# 83654, 83648, 83660, 83663
MicrosoftLearning/20486-DevelopingASPNETMVCWebApplications,MicrosoftLearning/20486-DevelopingASPNETMVCWebApplications,MicrosoftLearning/20486-DevelopingASPNETMVCWebApplications