docs: correct code in README.md

Author: A1ex3

README.md

@@ -6,6 +6,12 @@ sudo ./install.sh
 
 ## If you have problems with the package manager, use this script.
 
+```bash
+curl -L "https://github.com/A1ex3/install_gitlab_ci_centos8/blob/<VERSION>/centos-stream-8-vault-repos.sh" | sudo bash
+```
+
+### or
+
 ```bash
 sudo ./centos-stream-8-vault-repos.sh
 ```