corrected error message

phind/__init__.py

@@ -54,7 +54,7 @@ class PhindResponse:
 class Search:
     def create(prompt: str, actualSearch: bool = True, language: str = 'en') -> dict: # None = no search
         if user_agent == '' or cf_clearance == '':
-            raise ValueError('user_agent must be set, refer to documentation')
+            raise ValueError('user_agent and cf_clearance must be set, refer to documentation')
         
         if not actualSearch:
             return {