message: [sip-15] Fixing typo in docstring
diff: @@ -223,8 +223,9 @@ def get_time_range_endpoints(
  Note under certain circumstances the slice object may not exist, however the slice
  ID may be defined which serves as a fallback.
  - When SIP-15 is enabled all slices and will the [start, end) interval. If the grace
  - period is defined and has ended all slices will adhere to the [start, end) interval.
  + When SIP-15 is enabled all new slices will use the [start, end) interval. If the
  + grace period is defined and has ended all slices will adhere to the [start, end)
  + interval.
  :param form_data: The form-data
  :param slc: The slice
  