Update docstrings to zach's pleasing

Author: chrishalcrow

src/spikeinterface/core/baserecording.py

@@ -772,7 +772,7 @@ def frame_slice(self, start_frame: int | None, end_frame: int | None) -> BaseRec
 
     def time_slice(self, start_time: float | None, end_time: float) -> BaseRecording:
         """
-        Returns a new recording with sliced time. Note that this operation is not in place.
+        Returns a new recording object, restricted to the time interval [start_time, end_time].
 
         Parameters
         ----------

src/spikeinterface/core/basesorting.py

@@ -474,7 +474,7 @@ def frame_slice(self, start_frame, end_frame, check_spike_frames=True):
 
     def time_slice(self, start_time: float | None, end_time: float | None) -> BaseSorting:
         """
-        Returns a new sorting with sliced time. Note that this operation is not in place.
+        Returns a new sorting object, restricted to the time interval [start_time, end_time].
 
         Parameters
         ----------