Fix malformed environment variable name in confluence.v2.py.mdx (#550)

Author: Paul-Cornell

snippets/source_connectors/confluence.v2.py.mdx

@@ -46,7 +46,7 @@ if __name__ == "__main__":
         # For personal access token (PAT) authentication:
         # source_connection_config=ConfluenceConnectionConfig(
         #     access_config=ConfluenceAccessConfig(
-        #         token=os.getenv("CONFLUENCE_PERSON_ACCESS_TOKEN")
+        #         token=os.getenv("CONFLUENCE_PERSONAL_ACCESS_TOKEN")
         #     ),
         #     url=os.getenv("CONFLUENCE_URL")
         # ),
@@ -75,4 +75,4 @@ if __name__ == "__main__":
         embedder_config=EmbedderConfig(embedding_provider="huggingface"),
         uploader_config=LocalUploaderConfig(output_dir=os.getenv("LOCAL_FILE_OUTPUT_DIR"))
     ).run()
-```
+```