[Doc] Argument missing in description

[martinjankoehler]

In the doc for kdb.Region.space_check, the argument 'bool shielded = true' is missing from the Description:
https://www.klayout.de/doc-qt5/code/class_Region.html#method249

[klayoutmatthias]

It is somewhere below in the text, but not above in the TL;DR section :)

I will add it there. Thanks!

Matthias