duplicate backslashes in str.split docstring

[jwilk]

$ pydoc3 str.split | grep -F '\\'
        character (including \\n \\r \\t \\f and spaces) and will discard

These should be single backslashes.

Linked PRs

• gh-108915: Removes extra backslashes in str.split docstring #109044
• [3.12] gh-108915: Removes extra backslashes in str.split docstring (GH-109044). #109061
• [3.11] gh-108915: Removes extra backslashes in str.split docstring (GH-109044) #109062

[sobolevn]

This looks much better, I agree:

Would you like to send your first a PR? :)

[terryjreedy]

str.split.__doc__ has 4 backslashes for each char, whereas it should only have 2 so that 1 is left in the string instead of 2.