[#1869]: fix composer installation in README.md

Author: rustatian

README.md

@@ -71,7 +71,7 @@ Configuration located in the `.rr.yaml` file ([full sample](https://github.com/r
 You can also install RoadRunner automatically using the command shipped with the composer package, run:
 
 ```bash
-composer require spiral/roadrunner-http spiral/roadrunner-worker nyholm/psr7
+composer require spiral/roadrunner-cli
 ./vendor/bin/rr get-binary
 ```