docs: modify description

Author: cloydlau

README.md

@@ -5,7 +5,7 @@
 </h1>
 
 <p align="center">
-  Vue 2.6/2.7/3 & Nuxt 2/3 all-in-one JSON editor & viewer & formatter & validator.
+  Vue 2.6/2.7/3 & Nuxt 2/3 all-in-one JSON editor, viewer, formatter and validator.
   <br>
   English | <a href="./docs/README.zh-CN.md">简体中文</a>
   <br>

package.json

@@ -3,7 +3,7 @@
   "PascalCasedName": "JsonEditorVue",
   "version": "0.10.16",
   "private": false,
-  "description": "Vue 2.6/2.7/3 & Nuxt 2/3 all-in-one JSON editor & viewer & formatter & validator.",
+  "description": "Vue 2.6/2.7/3 & Nuxt 2/3 all-in-one JSON editor, viewer, formatter and validator.",
   "author": "Cloyd Lau",
   "license": "MIT",
   "repository": "https://github.com/cloydlau/json-editor-vue",