Rollup merge of #75859 - jrheard:patch-2, r=jonas-schievink
Rollup merge of #75859 - jrheard:patch-2, r=jonas-schievink

doc: Fix typo in std::process::Child documentation

Nearly done reading stdlib docs, found another small typo, here's a PR!

r? @steveklabnik

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