Update README.md

README.md

@@ -97,7 +97,8 @@ The following fields were extracted and/or transformed from the original source:
     - `number` / `text_number`: article or act number when applicable.
     - `category`: type of the related document (e.g. `LOI`, `DECRET`, etc.).
     - `link_type`: nature of the relationship (e.g. `TXT_SOURCE`, `CITATION`).
-    - `link_direction`: direction of the relation (`source` when the current article cites another text, `cible` when it is cited by another text).
+    - `link_direction`: direction of the relation, indicates whether the element carrying the link corresponds to the source or target of the link.
+      (e.g. `source` when the current article cites another text, `cible` when it is cited by another text).
     - `nor`: NOR identifier of the related act, when available.
     - `text_signature_date`: signature date of the related text (YYYY-MM-DD), when available.