* after pre-commit

Author: HYLcool

docs/sphinx_doc/source/tutorial/example_data_functionalities.md

@@ -9,7 +9,7 @@ In this example, you will learn how to apply the data processor of Trinity-RFT t
 3. what the data processor can do
 
 Before getting started, you need to prepare the main environment of Trinity-RFT according to the [installation section of the README file](../main.md),
-and store the base url and api key in the environment variables `OPENAI_BASE_URL` and `OPENAI_API_KEY` for some agentic or API-model usages if necessary. 
+and store the base url and api key in the environment variables `OPENAI_BASE_URL` and `OPENAI_API_KEY` for some agentic or API-model usages if necessary.
 
 ### Data Preparation