Add Tunnelmole as an open source alternative to ngrok to some more docs

[robbie-cahill]

Previously, Tunnelmole was added as an open source alternative to ngrok to the Cognitive Search docs in https://github.com/MicrosoftDocs/azure-docs/pull/117399

This PR adds it to

• Various Azure Functions docs
• Call automation
• Event Grid
• Communication Services

[prmerger-automator[bot]]

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

[learn-build-service-prod[bot]]

Learn Build status updates of commit b485592:

:warning: Validation status: warnings

File	Status	Preview URL	Details
articles/communication-services/how-tos/call-automation/record-every-call.md	:warning:Warning		Details
articles/azure-functions/durable/durable-functions-event-publishing.md	:white_check_mark:Succeeded
articles/azure-functions/event-grid-how-tos.md	:white_check_mark:Succeeded
articles/azure-functions/functions-event-grid-blob-trigger.md	:white_check_mark:Succeeded
articles/communication-services/how-tos/event-grid/local-testing-event-grid.md	:white_check_mark:Succeeded
articles/communication-services/quickstarts/sms/includes/receive-sms-js.md	:white_check_mark:Succeeded

articles/communication-services/how-tos/call-automation/record-every-call.md

• Line 186, Column 1: [Warning: code-block-indented - See documentation] Indented code blocks aren't allowed. Use a Markdown code block surrounded by triple backticks (```).
• Line 195, Column 1: [Warning: code-block-indented - See documentation] Indented code blocks aren't allowed. Use a Markdown code block surrounded by triple backticks (```).

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[ShannonLeavitt]

@ggailey777 @tophpalmer

IMPORTANT: When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

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

[prmerger-automator[bot]]

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

[Stacyrch140]

@ggailey777 @tophpalmer -

IMPORTANT: This PR has developed merge conflicts that need to be addressed before the PR can be reviewed. When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

[prmerger-automator[bot]]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @ggailey777, @tophpalmer

[AnnaMHuff]

PR review team emailed author @ggailey777 today

[ttorble]

@tophpalmer @ggailey777

Can you review this old PR and determine whether it needs to be closed or merged?

@MicrosoftDocs/public-repo-pr-review-team

[v-dirichards]

I sent an email to the content owner today.

@MicrosoftDocs/public-repo-pr-review-team