A NODATA response has ANCOUNT of 0 assuming no CNAME/DNAMES

(cherry picked from commit 4889e06c)

doc/arm/Bv9ARM-book.xml

@@ -10102,7 +10102,7 @@ deny-answer-aliases { "example.net"; };
 		    The empty set of resource records is specified by
 		    CNAME whose target is the wildcard top-level
 		    domain (*.).
-		    It rewrites the response to NODATA or ANCOUNT=1.
+		    It rewrites the response to NODATA or ANCOUNT=0.
 		  </para>
 		</listitem>
 	      </varlistentry>