Update README.md

README.md

@@ -17,7 +17,7 @@ The data can be **[downloaded as pre-processed files](https://github.com/MeteoSw
 | A <br> [Ground-based Measurements](https://github.com/MeteoSwiss/opendata/tree/main?tab=readme-ov-file#a---ground-based-measurements) | B <br> [Atmosphere Measurements](https://github.com/MeteoSwiss/opendata/tree/main?tab=readme-ov-file#b---atmosphere-measurements) | C <br> [Climate Data](https://github.com/MeteoSwiss/opendata/tree/main?tab=readme-ov-file#c---climate-data) | D <br> [Radar Data](https://github.com/MeteoSwiss/opendata/tree/main?tab=readme-ov-file#d---radar-data) | E <br> [Forecast Data](https://github.com/MeteoSwiss/opendata/tree/main?tab=readme-ov-file#e---forecast-data) |
 |-----|-----|-----|-----|-----|
 
-> [!NOTE]
+> ⚠️
 > In order to also provide **[access to the data via APIs](https://github.com/MeteoSwiss/opendata-api/blob/main/README.md) in future**, the necessary preparatory work is underway. As soon as an introduction date for this second type of access can be estimated, it will be communicated here.
 
 ## General information