Fix markdown in CHANGES.md
Fix markdown in CHANGES.md

No new line before a list caused it not to be recognized as a list.

highlightjs/highlight.js,carlokok/highlight.js,carlokok/highlight.js,MakeNowJust/highlight.js,MakeNowJust/highlight.js,palmin/highlight.js,highlightjs/highlight.js,highlightjs/highlight.js,MakeNowJust/highlight.js,carlokok/highlight.js,palmin/highlight.js,palmin/highlight.js,highlightjs/highlight.js,isagalaev/highlight.js,carlokok/highlight.js,isagalaev/highlight.js