chore(markdown): Restructuring dev docs

markdown/dev/reference/api/config/options/boolean/en.md

@@ -0,0 +1,16 @@
+---
+title: boolean
+---
+
+If your option is either `true` or `false`, or **on** or **off** or **yes** or **no**, you can use a boolean:
+
+Your boolean option should be an object with these properties:
+
+ - `bool` : Either `true` or `false` which will be the default
+
+```js
+options: {
+  withLining: { bool: true }
+}
+```
+