sumologicexporter: clarify what to use for exporting traces (#3388)
sumologicexporter: clarify what to use for exporting traces (#3388)

Signed-off-by: Dominik Rosiek <2ee6335924e387e2160d2cc1a287ed1d5b2c74c3@sumologic.com>
open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector-contrib