Add link to download OpenAPI spec (#572)

add link to download OpenAPI spec

Author: byrro

app/en/references/api/page.mdx

@@ -3,15 +3,16 @@ title: "Arcade API Reference"
 description: "Learn about the Arcade API.  It's swagger time!"
 ---
 
-import SwaggerUI from "swagger-ui-react"
-import "swagger-ui-react/swagger-ui.css"
-import "./swaggerHacks.css"
+import SwaggerUI from "swagger-ui-react";
+import "swagger-ui-react/swagger-ui.css";
+import "./swaggerHacks.css";
 
 # Arcade API Reference
 
 The base URL for all API requests is `https://api.arcade.dev`.
 
 The use of this API is subject to our [Terms of Service](https://arcade.dev/terms-of-service), and you are required to have an account in good standing.
 
-<SwaggerUI url="https://api.arcade.dev/v1/swagger"  />
+Our OpenAPI 3.0 specification is [available here](https://api.arcade.dev/v1/swagger).
 
+<SwaggerUI url="https://api.arcade.dev/v1/swagger" />