update readme to fix path.

This gitea image version-controls its own docker config, so a bit of chicken/egg going on

README.md

@@ -5,7 +5,7 @@ Version-controlling my Docker configs. Local copy of this repo is in `/short/too
 Typical usage (`sudo su` first obv):
 
 ```
-cd /short/tools/docker/compose
+cd /short/tools/docker/docker_compose
 git pull
 cd ./[whichever-image]/
 docker compose up -d