feat(zod-openapi): expose from (#632)

.changeset/tricky-bugs-switch.md

@@ -0,0 +1,5 @@
+---
+'@hono/zod-openapi': patch
+---
+
+expose `extendZodWithOpenApi` from `zod-to-openapi`

packages/zod-openapi/src/index.ts

@@ -548,7 +548,7 @@ export const createRoute = <P extends string, R extends Omit<RouteConfig, 'path'
 }
 
 extendZodWithOpenApi(z)
-export { z }
+export { extendZodWithOpenApi, z }
 
 function addBasePathToDocument(document: Record<string, any>, basePath: string) {
   const updatedPaths: Record<string, any> = {}