[FAB-12947] Add endpoint info to gossip.rst
[FAB-12947] Add endpoint info to gossip.rst

Change-Id: Ifa793a3a9346432a6a164a63bbcb45075e29541a
Signed-off-by: joe-alewine <fe2d55ddcdde6f951d073228e1f2dc081e79a271@ibm.com>

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