docs: Switch to r-dbi.org domain

DESCRIPTION

@@ -11,7 +11,7 @@ Authors@R:
     )
 Description: In order to make Arrow Database Connectivity ('ADBC' <https://arrow.apache.org/adbc/>) accessible from R, an interface compliant with the 'DBI' package is provided, using driver back-ends that are implemented in the 'adbcdrivermanager' framework. This enables interacting with database systems using the Arrow data format, thereby offering an efficient alternative to 'ODBC' for analytical applications.
 License: LGPL (>= 2.1)
-URL: https://r-dbi.github.io/adbi, https://github.com/r-dbi/adbi, https://arrow.apache.org/adbc/
+URL: https://adbi.r-dbi.org, https://github.com/r-dbi/adbi, https://arrow.apache.org/adbc/
 BugReports: https://github.com/r-dbi/adbi/issues
 Depends: 
     R (>= 3.0.0)