Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: ynqa

README.md

@@ -187,7 +187,7 @@ cargo run --bin json ${PATH_TO_JSON_FILE}
 
 <img src="https://github.com/ynqa/ynqa/blob/master/demo/promkit/json.gif" width="50%" height="auto">
 
-## Text
+### Text
 
 <details>
 <summary>Command</summary>