Fix container/hash to container/id

Author: ChimeraCoder

docker-without-docker.slide

@@ -83,7 +83,7 @@ Build and run:
     $ docker build -t bashtest .
     $ docker run -it bashtest
 
-(like Git, containers have hashes, and you can use the hash or a prefix instead of the name)
+(as with Git hashes, you can use the container ID or a prefix instead of the name)
 
 
 - Question: What runs as PID 1?