p.357 - 'shared_ptr' instead of 'make_shared'

[MisterrT]

Hi Josh,
the eighth line of the page 357 states

'here’s a fully adorned make_shared invocation'

but the code that follows this statement refers to a shared_ptr constructor invocation. This is probably a minor typo, otherwise the subsequent discussion at line 20 would be in contrast with the aforementioned code.