probe: Rename probe_prepare/finalize to probe_prepare/finish

The probe_finalize() name is used for callbacks in both the
PrinterProbe and ProbePointsHelper classes.  Rename the PrinterProbe
callback to avoid confusion.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/bltouch.py

@@ -182,7 +182,7 @@ class BLTouchEndstopWrapper:
         toolhead.flush_step_generation()
         self.start_mcu_pos = [(s, s.get_mcu_position())
                               for s in self.mcu_endstop.get_steppers()]
-    def probe_finalize(self):
+    def probe_finish(self):
         if self.multi == 'OFF':
             self.raise_probe()
         self.sync_print_time()