Tweak URL docs. Closes #4959

Author: colinhacks

packages/docs/content/api.mdx

@@ -317,7 +317,6 @@ const schema = z.url();
 schema.parse("https://example.com"); // ✅
 schema.parse("http://localhost"); // ✅
 schema.parse("mailto:[email protected]"); // ✅
-schema.parse("sup"); // ❌
 ```
 
 As you can see this is quite permissive. Internally this uses the `new URL()` constructor to validate inputs; this behavior may differ across platforms and runtimes but it's the mostly rigorous way to validate URIs/URLs on any given JS runtime/engine. 

play.ts

@@ -1,30 +1,3 @@
 import * as z from "zod";
 
-const NodeBase = z.object({
-  id: z.string(),
-  get children() {
-    console.log("accessed");
-    return z.array(Node).optional();
-  },
-});
-
-// typed as any
-console.log("nodeone");
-const NodeOne = NodeBase.extend({
-  name: z.literal("nodeOne"),
-  // if this is commented out, NodeTwo becomes any
-  get children() {
-    return z.array(Node);
-  },
-});
-
-const NodeTwo = NodeBase.extend({
-  name: z.literal("nodeTwo"),
-  get children() {
-    return z.array(Node);
-  },
-});
-
-const Node = z.union([NodeOne, NodeTwo]);
-
-z.object;
+console.log(z.url().parse("sup")); // ❌