Updated functions-recover-storage-account.md

[walterstypula]

Added information to resolve 'Azure Functions Runtime is unreachable' due to hostid trunction when the site name + slot name is 32 chars or longer.

[PRMerger8]

@walterstypula : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[Jak-MS]

IMPORTANT: When this content is ready to merge, the reviewer must add #sign-off in a comment or the approval may get overlooked.

#label:"aq-pr-triaged" @MicrosoftDocs/public-repo-pr-review-team

[ggailey777]

Hey @walterstypula, I'm trying to incorporate your commit into a more comprehensive fix. Could you please answer a couple of questions for me about why you are submitting this addition:

1. Did you actually see the Azure Functions Runtime is unreachable error as a result of a host ID collision between slots?
2. What version of the Functions runtime were you running on?

Thanks!

[walterstypula]

Hey @walterstypula, I'm trying to incorporate your commit into a more comprehensive fix. Could you please answer a couple of questions for me about why you are submitting this addition:

1. Did you actually see the Azure Functions Runtime is unreachable error as a result of a host ID collision between slots?
2. What version of the Functions runtime were you running on?

Thanks!

@ggailey777

1. Yes we did. Also the host.json file would fail to load when viewing app files.
2. We saw this problem after migrating to version 4. We didn't have this problem with version 2.

[ggailey777]

Contents from this PR were merged in https://github.com/MicrosoftDocs/azure-docs-pr/pull/208417 #please-close