Unrolled build for rust-lang#123142

Rollup merge of rust-lang#123142 - Nilstrieb:nils-knows-whats-happening, r=compiler-errors

Let nils know about changes to target docs

i'll probably expand the paths and add a message after rust-lang#121051 but i honestly don't expect that to land very soon lol, so it would be nice to get notified about changes already and watch what's happening there

approve this pr if you're cool

Author: rust-timer

triagebot.toml

@@ -717,6 +717,9 @@ cc = ["@rust-lang/project-exploit-mitigations", "@rcvalle"]
 [mentions."src/doc/unstable-book/src/compiler-flags/check-cfg.md"]
 cc = ["@Urgau"]
 
+[mentions."src/doc/rustc/src/platform-support"]
+cc = ["@Nilstrieb"]
+
 [mentions."tests/codegen/sanitizer"]
 cc = ["@rust-lang/project-exploit-mitigations", "@rcvalle"]