chore(markdown): Restructuring dev docs

markdown/dev/reference/api/macros/round/en.md

@@ -0,0 +1,31 @@
+---
+title: round
+---
+
+The `round` macro rounds a corner. It is provided by the [round plugin](/reference/plugins/round/).
+
+Note that this is only intended for 90 degree corners.
+
+<Example part="plugin_round" caption="Example of corners rounded with the round plugin" />
+
+```js
+macro('round', {
+  from: points.bottomRight,
+  to: points.topLeft,
+  via: points.topRight,
+  radius: 20,
+  prefix: 'tr',
+  render: true
+})
+```
+
+| Property    | Default | Type                | Description | 
+|------------:|---------|---------------------|-------------|
+| `from`      |         | [Point](/reference/api/point) | The startpoint towards the corner to round |
+| `to`        |         | [Point](/reference/api/point) | The endpoint away from the corner to round |
+| `via`       |         | [Point](/reference/api/point) | The corner to round |
+| `radius`    | Maximum | Number              | The radius in mm in not the maximum |
+| `prefix`    |         | String              | A prefix to give to the points and paths created by this macro |
+| `render`    | `false` | Boolean             | Whether to render the path created by this macro |
+| `class`     |         | String              | Class(es) to assign to the path created by this macro |
+