README: fix installation command

Signed-off-by: Álvaro Fernández Rojas <[email protected]>

README.md

@@ -33,7 +33,7 @@ This software is provided without warranty, according to the GNU Public Licence
 
 ## Install
 ```bash
-pip install aioairzone-cloud
+pip install AEMET-OpenData
 ```
 
 ## Install from Source