perlstype.pod: Fix spelling

"layout" is a noun, while "lay out" a verb (somewhat).

Author: rwp0

pod/perlstyle.pod

@@ -23,7 +23,7 @@ well as several other useful L<named features|feature/AVAILABLE FEATURES>).
 
     use v5.36;
 
-Regarding aesthetics of code lay out, about the only thing Larry
+Regarding aesthetics of code layout, about the only thing Larry
 cares strongly about is that the closing curly bracket of
 a multi-line BLOCK should line up with the keyword that started the construct.
 Beyond that, he has other preferences that aren't so strong: