Rollup merge of #77182 - GuillaumeGomez:missing-examples-fd-traits, r=pickfire
Rollup merge of #77182 - GuillaumeGomez:missing-examples-fd-traits, r=pickfire

Add missing examples for Fd traits

Not sure what happened here... This is a reopening of #77142

r? @Dylan-DPC

graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust