Update examples in sd trace exporter README. (#1008)
Update examples in sd trace exporter README. (#1008)


bogdandrutu/opencensus-java,bogdandrutu/instrumentation-java,sebright/instrumentation-java,sebright/instrumentation-java,sebright/opencensus-java,bogdandrutu/opencensus-java,sebright/opencensus-java,songy23/instrumentation-java,bogdandrutu/opencensus-java,songy23/instrumentation-java,bogdandrutu/instrumentation-java,census-instrumentation/opencensus-java,songy23/instrumentation-java,census-instrumentation/opencensus-java,census-instrumentation/opencensus-java,sebright/opencensus-java