FAB-13193 - Added help message to couch db metric
FAB-13193 - Added help message to couch db metric

Added help message to couch db metric

Change-Id: Icc24f39dcd8860ebe3872130a4318f848377dcc8
Signed-off-by: Saad Karim <d1da09defa5b48f678dafc09ede657abebbe94c4@us.ibm.com>

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