Revert "Change docker hub to ghcr"

This reverts commit e3406c7935.

README.md

@@ -26,7 +26,7 @@ cd 13ft
 docker compose up
 ```
 
-The image is also available from [ghcr.io](https://github.com/wasi-master/13ft/pkgs/container/13ft "docker pull ghcr.io/wasi-master/13ft:0.2.3") so the command `docker pull ghcr.io/wasi-master/13ft:latest` also works.
+The image is also available from [DockerHub](https://hub.docker.com/r/wasimaster/13ft "docker pull wasimaster/13ft") or [ghcr.io](https://github.com/wasi-master/13ft/pkgs/container/13ft "docker pull ghcr.io/wasi-master/13ft:0.2.3") so the command `docker pull wasimaster/13ft` also works.
 
 ### Standard Python script