Update docs/guides/deployment-scenarios/sso-quickstart.md,...

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Formatting/editing/grammatical changes made to multiple Guides pages, including Deployment scenario page: SSO Quick-start page and Back-up and Restore pages: Gitlab Back-up Restore and Nexus migration pages.

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docs/guides/deployment-scenarios/sso-quickstart.md

@@ -4,7 +4,7 @@
 
 ## Video Walkthrough
 
-A 54-minute speed run with explanations video walkthrough of this Single Sign-On (SS) quick-start guide can be found on the following two mirrored locations:
+A 54-minute speed run with explanations video walkthrough of this Single Sign-On (SSO) quick-start guide can be found on the following two mirrored locations:
 * [Google Drive - Video Mirror](https://drive.google.com/file/d/1xzRKhFQy4WXW97YWUFpixclLGAKfgA6Z/preview)
 * [Repo1 - Video Mirror](https://repo1.dso.mil/platform-one/bullhorn-delivery-static-assets/-/blob/master/big_bang/bigbang_sso_quickstart.mp4)