fix docstring

Author: allanstone

facturapi/resources/invoices.py

@@ -213,7 +213,7 @@ def send_by_email(
             bool: True if the email was sent successfully, False otherwise.
 
         Raises:
-            ValueError: If the invoice_id is not provided.
+            FacturapiResponseException: If the invoice_id is not found.
             requests.RequestException: If the API request fails.
         """