Replace initial key with just digest of it

Mentioned link if a file leads to XML with only checksums included.
Relation between them and included key is not obvious or specified.
Include initial digest, which is shorter and easier to validate.

named.root.key

@@ -9,11 +9,5 @@ trust-anchors {
         # file as initializing keys; thereafter, the keys in the
         # managed key database will be trusted and maintained
         # automatically.
-        . initial-key 257 3 8 "AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3
-                +/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kv
-                ArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF
-                0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+e
-                oZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfd
-                RUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwN
-                R1AkUTV74bU=";
+        . initial-ds 20326 8 2 "E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC683457104237C7F8EC8D";
 };