change README.md back to rroemhild/test-openldap

Author: AnalogJ

README.md

@@ -28,7 +28,7 @@ The Flask extension [flask-ldapconn][flaskldapconn] use this image for unit test
 
 ```
 docker pull rroemhild/test-openldap
-docker run --rm -p 10389:10389 -p 10636:10636 ghcr.io/analogj/docker-openldap-starttls:master
+docker run --rm -p 10389:10389 -p 10636:10636 rroemhild/test-openldap
 ```
 
 ## Testing