DOCS-718 - Google SSO for signup/sign-in

[kimsauce]

Purpose of this pull request

Google SSO for signup/sign-in

Select the type of change

• Minor Changes - Typos, formatting, slight revisions
• Update Content - Revisions, updating sections
• New Content - New features, sections, pages, tutorials
• Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

https://sumologic.atlassian.net/browse/DOCS-718

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[jpipkin1]

Looks good, @kimsauce. I have only a couple of minor suggestions.

[soc-service-agent]

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