Fix handleSubmit type documentation. (#1072)

Author: GrybosKamil

src/content/docs/useform/handlesubmit.mdx

@@ -4,7 +4,7 @@ description: Ready to send to the server
 sidebar: apiLinks
 ---
 
-## \</> `handleSubmit:` <TypeText>`((data: Object, e?: Event) => Promise<void>, (errors: Object, e?: Event) => void) => Promise<void>`</TypeText>
+## \</> `handleSubmit:` <TypeText>`((data: Object, e?: Event) => Promise<void>, (errors: Object, e?: Event) => Promise<void>) => Promise<void>`</TypeText>
 
 This function will receive the form data if form validation is successful.