Properly generate a multi-line array for package.json keywords

[chiubaka]

Tough to justify working on this, as I've found a workaround that doesn't involve a multi-line array, but I've found that it's surprisingly difficult to get the right formatting and indentation for a multi-line array of keywords in EJS.

There's some discussion of how includes don't respect indentation from the included file here, which is semi-relevant.

It's possible I just don't know all that much about EJS, but the one version of this that I was able to get working looked really bad in code, and just wasn't worth the trade-off. It felt like EJS wasn't respecting my indentation choices even inline, and I couldn't quite grok the pattern (or lack thereof) of indentation output based on the code I wrote.