fix error

confluence_qa.py

@@ -20,7 +20,7 @@ class ConfluenceQA:
     def store_in_vector_db(self) -> None:
         config = self.config        
         loader = ConfluenceLoader(
-            url=config.url, username=config.username, api_key=config.api_key
+            url=config.confluence_url, username=config.username, api_key=config.api_key
         )
         documents = loader.load(include_attachments=config.includeAttachements, limit=50, space_key=config.space_key)
         text_splitter = RecursiveCharacterTextSplitter(chunk_size=1000, chunk_overlap=150)