Update app.py

app.py

@@ -24,8 +24,8 @@ with open('config.json') as config_file:
     config = json.load(config_file)
 
 
-PERSIST_DOC_DIRECTORY = config["chroma_doc_data"]
-PERSIST_CODE_DIRECTORY =config["chroma_code_data"]
+PERSIST_DOC_DIRECTORY = config["persist_doc_directory"]
+PERSIST_CODE_DIRECTORY =config["persist_code_directory"]
 CHUNK_SIZE = config["chunk_size"]
 CHUNK_OVERLAP = config["chunk_overlap"]
 EMBEDDING_MODEL_NAME = config["embedding_model"]