Fix example in 4.8 Unpacking
Discovered by 宋文泰 in https://rt.perl.org/Ticket/Display.html?id=122917
Update example in 4.7.2 Captures In Signatures
(obsolete use of | with sigil in param )
Discovered by 宋文泰 in https://rt.perl.org/Ticket/Display.html?id=122915
Merge pull request #82 from usev6/master

Fix example in 4.8 Unpacking