chore: add code formatting and linting (#952)

website/content/docs/widgets/index.md

@@ -10,20 +10,20 @@ Widgets are specified as collection fields in the Netlify CMS `config.yml` file.
 
 To see working examples of all of the built-in widgets, try making a 'Kitchen Sink' collection item on the [CMS demo site](https://cms-demo.netlify.com). (No login required: click the login button and the CMS will open.) You can refer to the demo [configuration code](https://github.com/netlify/netlify-cms/blob/master/packages/netlify-cms/example/config.yml) to see how each field was configured.
 
-
 ## Common widget options
 
 The following options are available on all fields:
 
 - `required`: specify as `false` to make a field optional; defaults to `true`
 - `pattern`: add field validation by specifying a list with a [regex pattern](https://regexr.com/) and an error message; more extensive validation can be achieved with [custom widgets](https://www.netlifycms.org/docs/custom-widgets/#advanced-field-validation)
+
   - **Example:**
 
     ```yaml
-    - label: "Title"
-      name: "title"
-      widget: "string"
-      pattern: [".{12,}", "Must have at least 12 characters"]
+    - label: 'Title'
+      name: 'title'
+      widget: 'string'
+      pattern: ['.{12,}', 'Must have at least 12 characters']
     ```
 
 ## Default widgets