[vcpkg docs] Add the procedure for updating vcpkg to faq#17257

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BillyONeal merged 3 commits intomicrosoft:masterfrom PhoebeHui:dev/Phoebe/faq

Apr 29, 2021

+3

Commits on Apr 13, 2021

[vcpkg docs] Add the procedure for updating vcpkg to faq
PhoebeHui
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Commits on Apr 14, 2021

Address the review suggestions
PhoebeHui
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Commits on Apr 15, 2021

Update the changes
PhoebeHui
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