Rollup merge of #39506 - GuillaumeGomez:hashmap_docs, r=frewsxcv
Rollup merge of #39506 - GuillaumeGomez:hashmap_docs, r=frewsxcv

Add missing urls in HashMap

r? @frewsxcv

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