[2659] unrelated editorial fix: updated the comment to match the actual data.

src/bin/auth/tests/testdata/example-nsec3-inc.zone

@@ -1,4 +1,4 @@
-;; See query_testzone_data.txt for general notes.
+;; See example-base-inc.zone for general notes.
 
 ;; NSEC3PARAM.  This is needed for database-based data source to
 ;; signal the zone is NSEC3-signed