FAB-11269 Improve configtx.yaml batch descriptions
FAB-11269 Improve configtx.yaml batch descriptions

The descriptions for the assorted batch size parameters in configtx.yaml
are not as clear as they could be.  This CR expands the descriptions,
including what a batch is, and how it related to transactions and block
sizes.

This makes the issue #Done

Change-Id: If90eb7e902445ba887b8be1508a6247c9ee46cb2
Signed-off-by: Jason Yellick <3a1724207862302656e55e6f840a9996dad69e59@us.ibm.com>

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