Translations:Typography refresh/42/en

This is a small, conservative change. The previous type size was unreadable to many users. We found through user feedback that text zooming was used extensively to make the text more readable for those with even basic vision issues or impairments. Since we endeavor to make the information accessible to all users, this change felt like a basic requirement for any improvement in this area. Along with the type size the leading has also been increased to 21px leading, following typographic standards for leading i.e 120% of the type size. This helps readers who go past the introduction and read long paragraphs.