fix pathlib mistake

Author: zm711

neo/rawio/openephysrawio.py

@@ -295,9 +295,9 @@ def _parse_header(self):
             event_file_name_0 = event_files[0].stem  # this should always be the file without a '_n' appended
             for seg_index, oe_index in enumerate(oe_indices):
                 if oe_index == 0:
-                    event_filename = Path(self.dirname) / event_file_name_0 / ".events"
+                    event_filename = Path(self.dirname) / event_file_name_0 + ".events"
                 else:
-                    event_filename = Path(self.dirname) / event_file_name_0 / f"_{oe_index}" / ".events"
+                    event_filename = Path(self.dirname) / event_file_name_0 + f"_{oe_index}" + ".events"
 
                 event_info = read_file_header(event_filename)
                 # event files can exist, but just not have data