Auto merge of #54871 - u32i64:master, r=frewsxcv
Auto merge of #54871 - u32i64:master, r=frewsxcv

Remove unnecessary comma in `libstd/thread/mod.rs` doc comment

Fix typo in `libstd/thread/mod.rs` doc comment: remove unnecessary comma.

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