moving the signing config to the correct config area

package.json

@@ -120,6 +120,7 @@
         "nsis-web",
         "appx"
       ],
+      "sign": "./sign.js",
       "extraResources": [
         {
           "from": "node_modules/regedit/vbs",
@@ -185,8 +186,7 @@
       "allowToChangeInstallationDirectory": true,
       "artifactName": "${productName}-Installer-${version}.${ext}",
       "uninstallDisplayName": "${productName}",
-      "deleteAppDataOnUninstall": true,
-      "sign": "./sign.js"
+      "deleteAppDataOnUninstall": true
     },
     "portable": {
       "artifactName": "${productName}-Portable-${version}.${ext}"