[Documentation] Update all code examples using constructor as instructee in 37.50 release notes

Summary

For example, Persistent Player Statistics in Unreal Editor for Fortnite | Fortnite Documentation | Epic Developer Community

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Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Documentation

Steps to Reproduce

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Expected Result

Code compiles wo errors

Observed Result

Errors

Platform(s)

All

imo epic need to re do the docs for persistence. They have made it so confusing and it doesnt need to be this complex.

I use persistence and its such a basic system to do anything. I tried the docs method and it was a headache for sure.