chore(deps): Add prettier to devDependencies (#2071)

package.json

@@ -62,7 +62,6 @@
     "nprogress": "^0.2.0",
     "pac-proxy-agent": "^4.1.0",
     "plyr": "^3.6.2",
-    "prettier": "2.5.1",
     "qrcode": "^1.4.4",
     "register-service-worker": "^1.7.1",
     "svg-sprite-loader": "^6.0.11",
@@ -86,6 +85,7 @@
     "@vue/cli-service": "~4.5.0",
     "babel-eslint": "^10.1.0",
     "eslint": "^6.7.2",
+    "prettier": "2.5.1",
     "eslint-config-prettier": "^8.1.0",
     "eslint-plugin-prettier": "^3.3.1",
     "eslint-plugin-vue": "^7.9.0",