Remove --single-quote from prettier examples (#7663)

docusaurus/docs/setting-up-your-editor.md

@@ -163,13 +163,13 @@ Next we add a 'lint-staged' field to the `package.json`, for example:
   },
 + "lint-staged": {
 +   "src/**/*.{js,jsx,ts,tsx,json,css,scss,md}": [
-+     "prettier --single-quote --write",
++     "prettier --write",
 +     "git add"
 +   ]
 + },
   "scripts": {
 ```
 
-Now, whenever you make a commit, Prettier will format the changed files automatically. You can also run `./node_modules/.bin/prettier --single-quote --write "src/**/*.{js,jsx,ts,tsx,json,css,scss,md}"` to format your entire project for the first time.
+Now, whenever you make a commit, Prettier will format the changed files automatically. You can also run `./node_modules/.bin/prettier --write "src/**/*.{js,jsx,ts,tsx,json,css,scss,md}"` to format your entire project for the first time.
 
 Next you might want to integrate Prettier in your favorite editor. Read the section on [Editor Integration](https://prettier.io/docs/en/editors.html) on the Prettier GitHub page.