[trac813] a minor editorial fix in a comment line.

src/lib/dns/tests/testdata/message_fromWire15.spec

@@ -19,4 +19,4 @@ mac_size: 16
 mac: 0x227026ad297beee721ce6c6fff1e9ef3
 original_id: 0x2d65
 [edns]
-#) (all default
+# (all default)