fix __str__

app.py

@@ -61,6 +61,9 @@ class Segment:
         return timedelta_to_otr_timestamp(timedelta(seconds=self.end))
 
     def __str__(self):
+        return f'{self.start_ts} {self.text}'
+
+    def to_otr(self):
         sep = " "
         return f'<p><span class="timestamp" data-timestamp="{self.start}">{self.start_ts}</span>{sep}{self.text}</p>'