update docs to cal.dev (#2509)

apps/swagger/pages/index.tsx

@@ -38,7 +38,7 @@ export default function APIDocs() {
         docExpansion="none"
         operationsSorter="method"
         filter={true}
-        url={process.env.SWAGGER_DOCS_URL || "https://api.cal.com/docs"}
+        url={process.env.NEXT_PUBLIC_SWAGGER_DOCS_URL || "https://api.cal.dev/docs"}
       />
     </div>
   );