review fixes

pkg/core/block.go

@@ -20,14 +20,14 @@ type Block struct {
 	Reward       string `db:"reward"`
 	Difficulty   int64  `db:"difficulty"`
 	ExtraData    string `db:"extra_data"`
-	GasLimit     uint64 `db:"gaslimit"`
-	GasUsed      uint64 `db:"gasused"`
+	GasLimit     uint64 `db:"gas_limit"`
+	GasUsed      uint64 `db:"gas_used"`
 	Hash         string `db:"hash"`
 	IsFinal      bool   `db:"is_final"`
 	Miner        string `db:"miner"`
 	Nonce        string `db:"nonce"`
 	Number       int64  `db:"number"`
-	ParentHash   string `db:"parenthash"`
+	ParentHash   string `db:"parent_hash"`
 	Size         string `db:"size"`
 	Time         int64  `db:"time"`
 	Transactions []TransactionModel