* Update description for sink flag
- Add examples for broker, service and URI
- Add note about default prefix and service alias
* Update the sink flag description
* Update cli conventions doc
* Update the sink prefixes mapping
- 'ksvc' prefix for knative services
- Remove 'svc' or 'service' prefixes mapping for knative services
* Hint in err msg to use 'ksvc' if used prefixes 'svc' or 'service'
* Update CHANGELOG
* Update source list e2e tests to refer ksvc prefix
* Update sink flag description