[FAB-6956] Fix path to marbles chaincode
[FAB-6956] Fix path to marbles chaincode

The "Building Your First Network" section of
the docs describes how to optionally use
CouchDB.  As part of this, it has directions
on how to install marbles02 chaincode to
showcase the rich query features.

Unfortunately, the path to the chaincode in
the install command is incorrect.

Change-Id: Iaf04588064d1039fa6b1a723313bee50a79d1bb4
Signed-off-by: Gari Singh <10008a422f4be611b73174084ba2f7f909d5b402@gmail.com>

jimthematrix/fabric,xixuejia/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,stemlending/fabric,xixuejia/fabric,binhn/fabric,binhn/fabric,muralisrini/fabric,binhn/fabric,manish-sethi/fabric,manish-sethi/fabric,lukehuangch/fabric,jimthematrix/fabric,stemlending/fabric,lukehuangch/fabric,lukehuangch/fabric,lukehuangch/fabric,manish-sethi/fabric-sidedb,xixuejia/fabric,muralisrini/fabric,lukehuangch/fabric,stemlending/fabric,hyperledger/fabric,muralisrini/fabric,hyperledger/fabric,manish-sethi/fabric-sidedb,lukehuangch/fabric,lukehuangch/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb