HTML+RDFa 1.1 Typo?

In section 3.5.1, I believe the pattern-clean rule is meant to have on the
right side:

?target rdf:type rdfa:Pattern

instead of:

?subject rdf:type rdfa:Pattern

-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics