Spelling mistake fixed for condition of setting node_properties (#1004)

Author: kaustubh-darekar

backend/src/llm.py

@@ -168,7 +168,7 @@ async def get_graph_document_list(
     if "diffbot_api_key" in dir(llm):
         llm_transformer = llm
     else:
-        if "get_name" in dir(llm) and llm.get_name() != "ChatOenAI" or llm.get_name() != "ChatVertexAI" or llm.get_name() != "AzureChatOpenAI":
+        if "get_name" in dir(llm) and llm.get_name() != "ChatOpenAI" or llm.get_name() != "ChatVertexAI" or llm.get_name() != "AzureChatOpenAI":
             node_properties = False
             relationship_properties = False
         else: