Update src/s1reader/s1_annotation.py

Co-authored-by: Scott Staniewicz <[email protected]>

Author: seongsujeong

src/s1reader/s1_annotation.py

@@ -973,7 +973,7 @@ def extract_polynomial_sequence(cls, polynomial_list: list,
         polynomial_list: list
             list of (azimuth_time, isce3.core.Poly1d)
         datetime_start: datetime.datetime
-            Startime of the period
+            Start time of the period
         datetime_end: datetime.datetime
             end time of the period