Update directory name to cover the correct package name

protos/rail_backend/v1/queue_message.proto

@@ -0,0 +1,20 @@
+syntax = "proto3";
+
+package rail_backend.v1;
+
+import "rail_backend/v1/common.proto";
+import "rail_backend/v1/schedule_payload.proto";
+
+message IngressMessage {
+    string correlation_id = 1;
+    Metadata tracking_data = 2;
+    oneof payload {
+        UrlReference url_ref = 5;
+        SchedulePayload schedule_payload = 6;
+    }
+}
+
+message UrlReference {
+    string kind = 1;
+    string url = 2;
+}