[Feature] better guidance in instructions and failed workflow recovery

[mstojanovic]

Summary

AInstructions are unclear in a few points and can be improved to make them more precise and useful

Changes

.github/steps/2-setup-azure-environment.md
Name your new secret AZURE_SUBSCRIPTION_ID and paste the value from the id: field in the first command. ->
Name your new secret AZURE_SUBSCRIPTION_ID and paste the value from the Subscription ID: field in the first command.
or
Name your new secret AZURE_SUBSCRIPTION_ID and paste the value from the subscriptionId: field in the second command.

.github/steps/3-spinup-environment.md
in the .yml code the use of AZURE_REGION: a user could be pointed on where to check available regions for his Azure subscription, the link provided below does not offer that. This was the issue for me and that failed the workflow. Luckily, i do know how to use git and i could recover from it but users that fail. Another problem with this is that the new Step 4 page was created even if the workflow failed.

.github/steps/6-destroy-azure-environment.md
at the end there is a mention of the apps URLm and that was not presented to the user at any point before (or how to obtain it)

Additional context

some of the users of this tutorial will be beginners and the few issues i have encountered might make the users panic or quit. the tutorial is amazing by the way, really well done

[nguyenalex836]

@mstojanovic Thank you for raising this issue, and for the positive feedback! I'll get this triaged for review ✨ Our team will provide feedback regarding the best next steps for this issue - thanks for your patience! 💛