fix error in split() examples (closes #22459)

Patch by Raúl Cumplido.

--HG--
branch : 3.4
extra : amend_source : 370630cbcfa10a849431ab232e59f74f88700543
Fixed reference leak in the "backslashreplace" error handler.

--HG--
branch : 3.4
Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
records if allowZip64 is false.

--HG--
branch : 3.4
Fixed test_large_file_exception. Ported tests for large count of files
to AbstractTestZip64InSmallFiles.

--HG--
branch : 3.4
Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
directory attributes.

--HG--
branch : 3.4
Issue #22471: Avoid Python Launcher.app install problems by removing
vestigial Makefile step.

--HG--
branch : 3.4
Fixed bytes literals in tests.

--HG--
branch : 3.4
Merge heads

--HG--
branch : 3.4