Rollup merge of #40667 - DaseinPhaos:patch-4, r=GuillaumeGomez
Rollup merge of #40667 - DaseinPhaos:patch-4, r=GuillaumeGomez

Fix typo in `ptr` doc

`sizeof` should be `size_of`

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