Merge #995

995: change README.md r=Emilgardis a=honganan

For #991

Co-authored-by: honganan <weiyang.hong@tuya.com>

Author: bors[bot]

README.md

@@ -54,8 +54,8 @@ default to `docker`.
 
 ## Installation
 
-```
-$ cargo install cross --git https://github.com/cross-rs/cross
+```sh
+cargo install cross --git https://github.com/cross-rs/cross
 ```
 
 ## Usage