capitalisation

Author: miklcct

gtfs-realtime/proto/gtfs-realtime.proto

@@ -856,7 +856,7 @@ message TripDescriptor {
     // (in calendar.txt or calendar_dates.txt) is operating within the next 30 days. The trip to be duplicated is
     // identified via TripUpdate.TripDescriptor.trip_id. This enumeration does not modify the existing trip referenced by
     // TripUpdate.TripDescriptor.trip_id - if a producer wants to cancel the original trip, it must publish a separate
-    // TripUpdate with the value of CANCELED or DELETED. if a producer wants to replace the original trip, a value of 
+    // TripUpdate with the value of CANCELED or DELETED. If a producer wants to replace the original trip, a value of 
     // `REPLACEMENT` should be used instead.
     //
     // Trips defined in GTFS frequencies.txt with exact_times that is