TBR: js.syncbase: update 'docs' references to point to vanadium.github.io

MultiPart: 9/27

Change-Id: I6c8ae09a2b30eceb132cf968ea07f5ded7cadd94
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 69f169c..de03ce0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -13,8 +13,8 @@
 ## Contributing code
 
 Please read the [contribution
-guidelines](https://github.com/vanadium/docs/blob/master/contributing/README.md)
-before sending patches.
+guidelines](https://vanadium.github.io/community/contributing.html) before
+sending patches.
 
 **We do not accept GitHub pull requests.** (We use
 [Gerrit](https://www.gerritcodereview.com/) instead for code reviews.)
diff --git a/README.md b/README.md
index 2293218..0f2fb19 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@
     var syncbase = require("syncbase");
 
 When run in a browser, syncbase expects that the [vanadium
-extension](https://github.com/vanadium/docs/blob/master/tools/vanadium-chrome-extension.md)
+extension](https://vanadium.github.io/tools/vanadium-chrome-extension.html)
 will be installed.
 
 ## Bugs and feature requests