Enhance repository key in package.json

Author: mischah

package.json

@@ -2,9 +2,7 @@
  "name": "numeric-keyboard",
  "version": "0.6.0",
  "description": "Numeric keyboard for mobile browsers",
- "repository": {
- "type": "git",
- "url": "git@github.com:viclm/numeric-keyboard.git"
+ "repository": "viclm/numeric-keyboard"
  },
  "main": "dist/numeric_keyboard.vanilla.js",
  "scripts": {