Auto merge of rust-lang#106123 - gimbles:patch-1, r=jyn

Make note bold

~~this seems to be have occurred in a recent edit, i clearly remember just note being bold~~

the entire note was bold

Author: bors

README.md

@@ -5,7 +5,7 @@ standard library, and documentation.
 
 [Rust]: https://www.rust-lang.org
 
-**Note: this README is for _users_ rather than _contributors_.
+**Note: this README is for _users_ rather than _contributors_.**
 If you wish to _contribute_ to the compiler, you should read [CONTRIBUTING.md](CONTRIBUTING.md) instead.
 
 ## Quick Start