Rollup merge of rust-lang#138584 - atouchet:found, r=jieyouxu

Update Rust Foundation links in Readme

The Rust Foundation links in the Readme are outdated. I'm not sure if this is the best wording to use in place of the media guide, that can be changed if need be.

Author: jhpratt

README.md

@@ -67,11 +67,11 @@ See [LICENSE-APACHE](LICENSE-APACHE), [LICENSE-MIT](LICENSE-MIT), and
 trademarks and logos (the "Rust Trademarks").
 
 If you want to use these names or brands, please read the
-[media guide][media-guide].
+[Rust language trademark policy][trademark-policy].
 
 Third-party logos may be subject to third-party copyrights and trademarks. See
 [Licenses][policies-licenses] for details.
 
-[rust-foundation]: https://foundation.rust-lang.org/
-[media-guide]: https://foundation.rust-lang.org/policies/logo-policy-and-media-guide/
+[rust-foundation]: https://rustfoundation.org/
+[trademark-policy]: https://rustfoundation.org/policy/rust-trademark-policy/
 [policies-licenses]: https://www.rust-lang.org/policies/licenses