Added WEBSITE_CONTENTOVERVNET to the Networking section

[thekillingspree]

Added the WEBSITE_CONTENTOVERVNET app setting to the Networking section, as this is now used with File Share mounts in App Service over a VNET.

[prmerger-automator[bot]]

@thekillingspree : 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 fbb9357:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
articles/app-service/reference-app-settings.md	:white_check_mark:Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[Court72]

@cephalin

Can you review the proposed changes?

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

[cephalin]

#sign-off