Improve consistency and completeness of Packages document
Improve consistency and completeness of Packages document

- Include the output of the say calls in the name interpolation example.
- Make spacing and capitalization consistent.

tbrowder/doc,MasterDuke17/doc,tbrowder/doc,MasterDuke17/doc,MasterDuke17/doc,MasterDuke17/doc,perl6/doc,perl6/doc,perl6/doc,tbrowder/doc,tbrowder/doc,perl6/doc,perl6/doc