chore(docs): update description

Author: nklayman

README.md

@@ -1,6 +1,6 @@
 # Vue CLI Plugin Electron Builder
 
-A Vue Cli 3 plugin for Electron with no required configuration that uses [Electron Builder](https://www.electron.build/).
+A Vue Cli 3/4 plugin for Electron with no required configuration that uses [Electron Builder](https://www.electron.build/).
 
 Build status: [![Build status](https://github.com/nklayman/vue-cli-plugin-electron-builder/workflows/Node%20CI/badge.svg)](https://github.com/nklayman/vue-cli-plugin-electron-builder/actions)
 

docs/.vuepress/config.js

@@ -1,7 +1,7 @@
 module.exports = {
   title: 'Vue CLI Plugin Electron Builder',
   description:
-  'A Vue CLI 3 plugin for Electron with no required configuration.',
+  'A Vue CLI 3/4 plugin for Electron with no required configuration.',
   base: '/vue-cli-plugin-electron-builder/',
   ga: 'UA-134189455-2',
   head: [