Rename Advanced Pub\Sub examples

[yellowhatter]

Describe the feature

@oteffahi suggested: #455 (comment)

[DenisBiryukov91]

But this seems to be the common naming for all our Kotlin examples, so we either keep it as is, or rename every single example to z_** pattern.

[oteffahi]

But this seems to be the common naming for all our Kotlin examples, so we either keep it as is, or rename every single example to z_** pattern.

The issue is not in the z_* pattern, just the fact that they're called ZAdvancedPublisher instead of ZAdvancedPub