fixup prefix/postfix test comment

Author: ploxiln

statsdaemon_test.go

@@ -205,7 +205,7 @@ func TestParseLineMisc(t *testing.T) {
 	flag.Set("postfix", ".test")
 	d = []byte("prefix:4|c")
 	packet = parseLine(d)
-	// prefix/prefix not in Bucket/key, added in processCounters() etc
+	// prefix/postfix not in Bucket/key, added in processCounters() etc
 	assert.Equal(t, "prefix", packet.Bucket)
 	assert.Equal(t, float64(4), packet.ValFlt)
 	assert.Equal(t, "c", packet.Modifier)