update pipeline example

Signed-off-by: eric-epsilla <eric@epsilla.com>

Author: eric-epsilla

examples/Question_Answering_Pipeline_with_LangChain_and_EpsillaCloud.py

@@ -17,7 +17,7 @@
 # Step2. Configure the OpenAI API Key
 import os
 
-# os.environ["OPENAI_API_KEY"] = "Your-OpenAI-API-Key"
+os.environ["OPENAI_API_KEY"] = "Your-OpenAI-API-Key"
 epsilla_api_key = os.getenv("EPSILLA_API_KEY", "Your-Epsilla-API-Key")
 project_id = os.getenv("EPSILLA_PROJECT_ID", "Your-Project-ID")
 db_id = os.getenv("EPSILLA_DB_ID", "Your-DB-ID")