fix af-south to af-south-1

Author: rpardini

input/datacenters

@@ -18,4 +18,4 @@ ap-south-1;Mumbai;19.08;72.88
 ca-central-1;Canada Central;45.5;-73.6
 ap-east-1;Hong Kong;22.27;114.16
 me-south-1;Bahrain;26.10;50.46
-af-south;South Africa;-33.93;18.42
+af-south-1;South Africa;-33.93;18.42