chore(markdown): Add Svg.render() documentation

markdown/dev/reference/api/svg/render/en.md

@@ -2,4 +2,28 @@
 title: Svg.render()
 ---
 
-FIXME: Write docs
+The `Svg.render()` method will render a drafted
+[Pattern](/reference/core/pattern) as SVG.
+
+## Signature
+
+```js
+string svg.render()
+```
+
+## Svg.render() example
+
+```
+import { Aaron } from "@freesewing/aaron"
+
+// Load some public test measurements from the FreeSewing backend
+const measurements = (
+  await (
+    await fetch("https://backend3.freesewing.org/curated-sets/1.json")
+  ).json()
+).measurements
+
+const pattern = new Aaron({ measurements })
+
+const svg = new Svg(pattern).render()
+```