Merge changes from topic \'bad-attr-buildfix\' into nyc-dev

am: 7e91ec88ef

* commit '7e91ec88ef61343345defe58ea968228b10d003a':
  Fix attr link in support lib docs.
  Revert "Revert "docs: Creating new support library revision history page""

Change-Id: Ie2bdbbb96678a1e5cf6fe5e21d722335749cd7f7

docs/html/topic/libraries/_book.yaml

@@ -6,6 +6,8 @@ toc:
     path: /topic/libraries/support-library/features.html
   - title: Setup
     path: /topic/libraries/support-library/setup.html
+  - title: Revision History
+    path: /topic/libraries/support-library/revisions.html
 
 - title: Data Binding Library
   path: /topic/libraries/data-binding/index.html