Typo correction in forefront README

gpt4free/forefront/README.md

@@ -6,8 +6,11 @@ from gpt4free import forefront
 token = forefront.Account.create(logging=False)
 print(token)
 # get a response
-for response in forefront.StreamingCompletion.create(token=token,
-                                                     prompt='hello world', model='gpt-4'):
-    print(response.completion.choices[0].text, end='')
+for response in forefront.StreamingCompletion.create(
+	token=token,
+	prompt='hello world',
+	model='gpt-4'
+):
+    print(response.choices[0].text, end='')
 print("")
 ```