If this is copy/pasted directly from your file
you have a spelling error, a missing 'r' in
Thanks it was my mistake.
I'll try to look less stupid next time. By the way, maybe the jboss people could make their dtds available under http://www.jboss.org/j2ee/dtd/ as mentioned in the PUBLIC identifier of their dtds so that XML tools could validate the deployment descriptors and prevent others from making the same kind of mistake I did. Or maybe JBoss should complain about invalid deployment descriptors...
These are just thoughts...
Open the conf/jboss-service.xml file and search for the string ValidateDTDs :-)