>its engineers were using HTML5, a programming language that ...
1) Doing so is not technically wrong
2) For a certain (non-technical) audience, "programming language" is something that "tells the computer to do things"
So, it is both correct and a helpful description for the target audience.
Nitpicking is out of order here.
Which is technically correct, just not very useful.
What that actually means, I'm not sure. I know how gerrymandered congress is, and they couldn't possibly get enough work done to be Turing complete.
[1] "A Rotlung Reanimator makes a messenger token for Alex."