[FAB-6895] Update doc for chaincode mounting
[FAB-6895] Update doc for chaincode mounting

This changes the manual peer chaincode install command
to reflect the correct path of the mounted volume on
the CLI container.
Also fixes an inline reference
[ci-skip]

Change-Id: I46472af16dbdfe7ece355ba8020137cea0510dce
Signed-off-by: Nick Gaski <37a743b06b759d6e90b0bcef5abbfc458cb9f2d3@us.ibm.com>

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