If we're going to define a programming language as one that is Turing complete, it's important (in a kind of pedantic sense) to note that that includes HTML (with CSS), which can be used to encode a Rule 110 automaton, and excludes C, whose standard imposes an (implementation-defined) upper bound on accessible memory, meaning it can never, even in principle†, similarly a Turing machine, which has infinite storage. This is probably not what was intended :)

† Obviously, for physical reasons given our current understanding of cosmology, no _implementation_ of a language can ever really be Turing-complete, but some language definitions are theoretically compatible with Turing-completeness, and others aren't.