Make title of docset in browser tab match title displayed in webpage

[mikehoffms]

Rendered articles for review:

• Internal, fully rendered: https://review.learn.microsoft.com/microsoft-edge/devtools-guide-chromium/overview?branch=pr-en-us-3056 - to test, hover over browser tab; also copypaste url.
• Before/Live

This PR fixes an aspect of Issue #3051.

AB#48977634

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

Learn Build status updates of commit 481bd38:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/docfx.json	:white_check_mark:Succeeded

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