Rollup merge of #89799 - ast-ral:ready-method-spellck, r=joshtriplett
Rollup merge of #89799 - ast-ral:ready-method-spellck, r=joshtriplett

fix minor spelling error in Poll::ready docs

Fixes minor spelling error in the proposed `Poll::ready` docs. Not that my opinion matters, but +1 on the original PR (#89651), it reads much nicer to me than the `ready!` macro.

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