Reference current application APIs in peer event service docs
Reference current application APIs in peer event service docs

Signed-off-by: Mark S. Lewis <ff7eb00f821c62e10b8e7cdcfd5b1b671f59d90e@uk.ibm.com>

jimthematrix/fabric,jimthematrix/fabric,manish-sethi/fabric,manish-sethi/fabric,hyperledger/fabric,hyperledger/fabric