Update README.md

README.md

@@ -28,8 +28,8 @@ By offering structured data for these changes, this dataset enables tooling and
 The dataset includes the following fields:
 - **version**: The Lean 4 version associated with the change (e.g., "v4.16.0").
 - **section**: The section of the changelog where the change appears (e.g., "## Language," "## Libraries").
-- **title**: The title of the change, often a GitHub pull request reference (e.g., "#6204").
-- **description**: A detailed description of the modification.
+- **text**: The content of the change
+- **pull request**: The associated pull request.
 
 ### Example Row