chore(markdown): Updated utils docs for v3

markdown/dev/reference/api/utils/beamintersectsy/en.md

@@ -1,38 +1,40 @@
 ---
-title: beamIntersectsY()
+title: utils.beamIntersectsY()
 ---
 
+The `utils.beamIntersectsY()` function finds the intersection between an endless
+line and a given Y-value. Returns a [Point](/reference/api/point) object for
+the intersection, or `false` there is no intersection.
+
+## Signature
+
 ```js
 Point | false utils.beamIntersectsY(Point A, Point B, float Y)
 ```
 
-Finds the intersection between an endless line and a given Y-value. Returns a [Point](/reference/api/point) object
-for the intersection, or `false` there is no intersection.
+## Example
 
-<Example part="utils_beamintersectsy">
-A Utils.beamIntersectsY() example
+<Example caption="A Utils.beamIntersectsY() example">
+```js
+({ Point, points, Path, paths, Snippet, snippets, utils, part }) => {
+
+  points.A = new Point(10, 10)
+  points.B = new Point(50, 40)
+  
+  paths.AB = new Path().move(points.A).line(points.B)
+  
+  snippets.x = new Snippet(
+    "notch", 
+    utils.beamIntersectsY(points.A, points.B, 30)
+  )
+  
+  paths.help = new Path()
+    .move(new Point(0, 30))
+    .line(new Point(50, 30))
+    .attr("class", "note dashed")
+
+  return part
+}
+```
 </Example>
 
-```js
-let {
-  Point,
-  points,
-  Path,
-  paths,
-  Snippet,
-  snippets,
-  utils
-} = part.shorthand();
-
-points.A = new Point(10, 10);
-points.B = new Point(50, 40);
-
-paths.AB = new Path().move(points.A).line(points.B);
-
-snippets.x = new Snippet("notch", utils.beamIntersectsY(points.A, points.B, 30));
-
-paths.help = new Path()
-  .move(new Point(0, 30))
-  .line(new Point(50, 30))
-  .attr("class", "note dashed");
-```