improve phrasing of change log to better match the updates

NEWS.md

@@ -4,9 +4,9 @@
 
   - Add parameters require_complete_lastnight_part5 to control whether last window is included if last night is incomplete. #1196
 
-  - Adjust sleeplog times to recording length in part 5 when classifying a night that was not detected in part 4. #1206
+  - Handle sleeplog times beyond the end of the recording. #1206
 
-  - Fixed minor bug in g.part5.addfirstwake causing the first wake is not correctly added when no SIBs are detected from the beginning of the recording until the first detected night. #1198
+  - Fixed minor bug in g.part5.addfirstwake causing the first wake is not correctly added when no SIBs are detected in between the start of the recorded and the algorithm or diary based estimate of wakeup time. #1198
 
   - Revise MM window definition in daylight saving time days, as it assumed fixed day duration of 24 hours #1211