Rollup merge of #148791 - luca3s:fix-doc-comment, r=lqd

fix "is_closure_like" doc comment

Noticed that the [docs](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TyCtxt.html#method.is_closure_like) stopped in the middle of the sentence. The text exists, but wasn't rendered because it was a regular comment.

Author: Zalathar