Suggest to add the Azure Function Application Settings Resource to Task 1 - For ServerlessWTH Challenge 4

[anniexudan]

As a student, when I trying to configure the first Tast. I got confused. I have assumed the local version of TollBooth project already have application setting json file. And, as first time user of Azure Function, I may not know where to add the application settings for azure function. So I suggest adding the resource for how to do that in the student resources section: https://docs.microsoft.com/en-us/azure/azure-functions/functions-how-to-use-azure-function-app-settings

Thanks team.

[anniexudan]

This is for ServerlessWTH Challenge 4

[anniexudan]

I created a pull request for this change instead so closing the issue

[anniexudan]

I created a pull request for this change instead so closing the issue