Update godoc comment for BlockPayload
@@ -15,7 +15,7 @@ type BlockHeader struct {
// A BlockPayload is the full contents of a block.
//
-// A payload contains the collection guarantees and seals contained within a block.
+// A payload contains the collection guarantees and seals for a block.
type BlockPayload struct {
Guarantees []*CollectionGuarantee
Seals []*BlockSeal
