bpo-43928: Fix a typo in documentation

[jeffreytse]

The boolean predicate was typo in documentation.

https://bugs.python.org/issue43928

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[Fidget-Spinner]

Thanks for the PR! Unfortunately, I don't think this is a valid docs change. the current docs are correct as you can see here: https://docs.python.org/3/c-api/arg.html#other-objects

You can see that **p**\ redicate becomes predicate. The white space is escaped (\ ) so the **p** and redicate is merged into predicate in the rendered HTML.

The new change looks like this: ppredicate.

[rhettinger]

I concur that this is invalid.

[jeffreytse]

Oh, I see your key point, it's my mistake. But was it closed too fast? I still have the commits need to merge. I just found it was closed. 🙀

[jeffreytse]

Hi, @rhettinger , could you reopen this PR? Or I just create a new PR for my other commits? Thanks and regards.