Make comment.block.documentaion.js match before comment.block.js.

Javascript Next was defining `/** stuff */` as `comment.block.js` where as the regular Javascript syntax was defining it correctly as `comment.block.documentaion.js`. I noticed that the regular JS syntax defines `comment.block.documentaion.js` before  `comment.block.js`. So I swapped them around in JSNext.

I use https://github.com/spadgos/sublime-jsdocs, which looks for `comment.block.documentaion.js` for autocompletion.