package.json: last reformatting
package.json: last reformatting

These are the remaining non-whitespace changes needed to normalize package.json
formatting, bringing it in line with the npm 6.1.0 default format.

Future edits to this file should follow this default format, in order to
minimize churn.

joequant/etherpad-lite,aptivate/etherpad-lite,University-of-Potsdam-MM/etherpad-lite,cloudfoundry-community/etherpad-lite-cf,storytouch/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,cloudfoundry-community/etherpad-lite-cf,aptivate/etherpad-lite,University-of-Potsdam-MM/etherpad-lite,joequant/etherpad-lite,lpagliari/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite,University-of-Potsdam-MM/etherpad-lite,lpagliari/etherpad-lite,cloudfoundry-community/etherpad-lite-cf,lpagliari/etherpad-lite,aptivate/etherpad-lite,cloudfoundry-community/etherpad-lite-cf,storytouch/etherpad-lite,lpagliari/etherpad-lite,storytouch/etherpad-lite,University-of-Potsdam-MM/etherpad-lite,ether/etherpad-lite