fixed readme for gitea

README.md

 ```
 
 
-/app/gogs/gogs: (chmod +x)
+/app/gitea/gitea: (chmod +x)
 ```
 #!/bin/sh
-docker exec -e SSH_ORIGINAL_COMMAND="${SSH_ORIGINAL_COMMAND}" gitea-gitea $0 "$@"
+docker exec -i -u git -e SSH_ORIGINAL_COMMAND="${SSH_ORIGINAL_COMMAND}" gitea-gitea $0 "$@"
 ```
 
 /etc/ssh/sshd_config: