Update logs.rs

Author: lalitb

opentelemetry-proto/src/transform/logs.rs

@@ -118,7 +118,7 @@ pub mod tonic {
                     #[cfg(not(feature = "populate-logs-event-name"))]
                     attributes
                 },
-                event_name: log_record.event_name.unwrap_or_default().into(),
+                event_name: log_record.event_name().unwrap_or_default().into(),
                 severity_number: severity_number.into(),
                 severity_text: log_record
                     .severity_text()