I wouldn't say that it's _correct_, but I'd say it's how we've chosen to do it -- if you check our other text-heavy files, we use straight quotes and apostrophes in all of them. (Part of it is " and ' have better support across fonts than &ldquo; &rdquo; and &#8216; &#8217;, and part of it is we'd have to `.html_safe` every translatable string with a contraction, possessive, or quote if we wanted to use curly quotes and apostrophes.)