[docs] [issue29596] Unfinished sentense in howto/clinic.rst

[Steven Rumbalski]

Steven Rumbalski added the comment:

Truncated sentence was always truncated.

Introduced on commit bebf73511a1250fc768bcb7192b5b3c3fd04d8f2
from Issue #20287: Argument Clinic's output is now configurable, allowing
delaying its output or even redirecting it to a separate file.
https://github.com/python/cpython/commit/bebf73511a1250fc768bcb7192b5b3c3fd04d8f2

Another issue from the same commit that still exists today:

buffer
    Save up all most of the output from Clinic, to be written into your file near the end.
            ^^^^^^^^

Perhaps what was meant was 'almost all'?

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nosy: +Steven Rumbalski

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29596>
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