fix linting

src/components/DataExportSection.vue

@@ -136,7 +136,7 @@ export default class DataExportSection extends Vue {
         transform: (table, value, key) => {
           if (table === "contacts") {
             // Dexie inserts a number 0 when some are undefined, so we need to totally remove them.
-            Object.keys(value).forEach(prop => {
+            Object.keys(value).forEach((prop) => {
               if (value[prop] === undefined) {
                 delete value[prop];
               }