Update doc links

- New Node.js link
- Replace 2.1 with latest 2.2 release

Signed-off-by: James Taylor <[email protected]>

Author: jt-nti

docs/_config.yml

@@ -3,4 +3,4 @@ title: "fabric-chaincode-java"
 releases:
   - master
   - release-1.4
-  - release-2.1
+  - release-2.2

docs/index.md

@@ -6,7 +6,7 @@ Hyperledger Fabric offers a number of SDKs to support developing smart contracts
 in various programming languages. There are two other smart contract SDKs available for Go, and Node.js, in addition to this Java SDK:
 
   * [Go SDK documentation](https://godoc.org/github.com/hyperledger/fabric/core/chaincode/shim)
-  * [Node.js SDK documentation](https://fabric-shim.github.io/)
+  * [Node.js SDK documentation](https://hyperledger.github.io/fabric-chaincode-node/)
 
 ## Documentation