Update README.md

README.md

@@ -83,6 +83,6 @@ with rasterio.open("wealth_map.tif") as src:
     print("Mean IWI (2017–2019):", mean_wealth_2017_2019)
 ```
 
-Disclaimer
+# Disclaimer
 
 While we have made every effort to ensure the accuracy and reliability of these wealth estimates, they should be interpreted within the context and limitations of the source data and modeling methods. The authors and contributors accept no liability for any loss or damage arising from the use of this data.