am dd9c75f3: am 24a6be46: am 36866dc7: am 4afcda74: am 79ad6310: Merge "docs: changed references to Google+ sign-in to Google sign-in" into mnc-preview-docs

* commit 'dd9c75f33181664f7dac7c3d5eb0cc6eae0d6f7b':
  docs: changed references to Google+ sign-in to Google sign-in