Update preparers.py (#35925)

Author: jerryshia

sdk/formrecognizer/azure-ai-formrecognizer/tests/preparers.py

@@ -52,7 +52,7 @@ def create_resource(self, name, **kwargs):
         if self.is_live:
             form_recognizer_account = os.environ["FORMRECOGNIZER_TEST_ENDPOINT"]
             form_recognizer_account_key = os.environ["FORMRECOGNIZER_TEST_API_KEY"]
-            polling_interval = 5
+            polling_interval = 1
         else:
             form_recognizer_account = "https://fakeendpoint.cognitiveservices.azure.com"
             form_recognizer_account_key = "fakeZmFrZV9hY29jdW50X2tleQ=="