Add UHRI policy link and change-notice caveat in Licence section

README.md

@@ -140,6 +140,7 @@ Features: boolean + wildcard + FTS5 stemmed search, per-country profiles, hex ma
 
 ## Licence
 
-Source data © OHCHR — shared freely and without restriction per the [UHRI data policy](https://uhri.ohchr.org/en/our-data-api).  
+Source data © OHCHR — shared freely and without restriction per the **[UHRI data policy](https://uhri.ohchr.org/en/our-data-api)**.  
+> ⚠️ The OHCHR data policy may change. Always consult the current terms at [uhri.ohchr.org/en/our-data-api](https://uhri.ohchr.org/en/our-data-api) before redistributing. This dataset card reflects the policy as of 2026-05-18.
+
 Cleaning pipeline, normalisation, Stage 4 country backfill, and all metadata additions © L. Szoszkiewicz (Adam Mickiewicz University, Poznań), released under [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/) — free for research and education, commercial use requires permission.
-Cleaning pipeline and metadata additions © L. Szoszkiewicz (Adam Mickiewicz University, Poznań).