Fix typo.

package-lock.json

@@ -3260,8 +3260,7 @@
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "coa": {
       "version": "2.0.2",
@@ -9023,8 +9022,7 @@
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
       "integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "pify": {
       "version": "4.0.1",
@@ -10559,8 +10557,7 @@
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
       "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "rx-lite-aggregates": {
       "version": "4.0.8",

vue.config.js.example

@@ -7,7 +7,7 @@ module.exports = {
     name: 'Serverless Invoices',
     manifestOptions: {
       short_name: 'Invoices',
-    }
+    },
     themeColor: '#edeff1',
     appleMobileWebAppCapable: 'yes',
     workboxPluginMode: 'GenerateSW',