Added redirection for install and overview

[mikefrobbins]

PR Summary

Fixes AB#316518 - Added redirection for install and overview

PR Checklist

• [x] Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• [x] Summary: This PR's summary describes the scope and intent of the change.
• [x] Contributor's Guide: I have read the contributors guide.
• [x] Style: This PR adheres to the style guide.

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

Learn Build status updates of commit a0cee26:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
.openpublishing.redirection.json	:white_check_mark:Succeeded	View (azps-12.4.0) View (azps-12.3.0) View (azurermps-6.13.0) View (aztools) View (azps-11.6.0) View (azps-0.10.0) View (azuresmps-4.0.0)

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