Point to the crates.io ops guide on the crates.io page

Author: carols10cents

src/crates-io/README.md

@@ -1,3 +1,8 @@
 # crates.io
 
-This section documents the processes of the crates.io team.
+The crates.io team has [its own operations guide][ops] in [a private repo][repo]. Contact [a member
+of the crates.io team][team] if you need access to the crates.io ops guide.
+
+[ops]: https://ops-guide.crates.io/
+[repo]: https://github.com/rust-lang/crates-io-ops-guide
+[team]: https://www.rust-lang.org/governance/teams/crates-io