Update README.md

README.md

@@ -63,7 +63,7 @@ The following transformations were applied:
 
 - **Basic fields**: `doc_id` (cid), `title`, `full_title`, `number`, `date`, `nature`, `status`, `nature_delib`, were taken directly from the source XML file.
 - **Generated fields**:
-  - `chunk_id`: A unique hash for each text chunk.
+  - `chunk_id`: a generated unique identifier combining the `doc_id` and `chunk_index`.
   - `chunk_index`: is the index of the chunk of a same deliberation document. Each document has an unique `doc_id`.
   - `chunk_xxh64`: is the xxh64 hash of the `chunk_text` value. It is useful to determine if the `chunk_text` value has changed from a version to another. 
 - **Textual fields**: