Update 20487C_MOD11_DEMO.md
Update 20487C_MOD11_DEMO.md

Fix Bug 90839
MicrosoftLearning/20487-DevelopingWindowsAzureAndWebServices,MicrosoftLearning/20487-DevelopingWindowsAzureAndWebServices,MicrosoftLearning/20487-DevelopingWindowsAzureAndWebServices