Unify the representation of the three dots.

internal/api/ws/codeocean_writer.go

@@ -59,7 +59,7 @@ type writingLoopMessage struct {
 }
 
 // NewCodeOceanOutputWriter provides an codeOceanOutputWriter for the time the context ctx is active.
-// The codeOceanOutputWriter handles all the messages defined in the websocket.schema.json (start, timeout, stdout, ..).
+// The codeOceanOutputWriter handles all the messages defined in the websocket.schema.json (start, timeout, stdout, ...).
 func NewCodeOceanOutputWriter(
 	connection Connection, ctx context.Context, done context.CancelFunc) WebSocketWriter {
 	cw := &codeOceanOutputWriter{