Update 20487C_MOD04_LAB_MANUAL.md
Update 20487C_MOD04_LAB_MANUAL.md

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