[doc] add linebreak for GoDoc

Author: nanmu42

account.go

@@ -30,7 +30,9 @@ func (c *Client) MultiAccountBalance(addresses ...string) (balances []AccountBal
 }
 
 // NormalTxByAddress gets a list of "normal" transactions by address
+//
 // startBlock and endBlock can be nil
+//
 // if desc is true, result will be sorted in blockNum descendant order.
 func (c *Client) NormalTxByAddress(address string, startBlock *int, endBlock *int, page int, offset int, desc bool) (txs []NormalTx, err error) {
 	param := M{
@@ -51,7 +53,9 @@ func (c *Client) NormalTxByAddress(address string, startBlock *int, endBlock *in
 }
 
 // InternalTxByAddress gets a list of "internal" transactions by address
+//
 // startBlock and endBlock can be nil
+//
 // if desc is true, result will be sorted in descendant order.
 func (c *Client) InternalTxByAddress(address string, startBlock *int, endBlock *int, page int, offset int, desc bool) (txs []InternalTx, err error) {
 	param := M{
@@ -73,6 +77,7 @@ func (c *Client) InternalTxByAddress(address string, startBlock *int, endBlock *
 
 // ERC20Transfers get a list of "erc20 - token transfer events" by
 // contract address and/or from/to address.
+//
 // leave undesired condition to nil.
 func (c *Client) ERC20Transfers(contractAddress, address *string, startBlock *int, endBlock *int, page int, offset int) (txs []ERC20Transfer, err error) {
 	param := M{

transaction.go

@@ -13,6 +13,7 @@ import "errors"
 var ErrPreByzantiumTx = errors.New("pre-byzantium transaction does not support receipt status check")
 
 // ExecutionStatus checks contract execution status (if there was an error during contract execution)
+//
 // note on IsError: 0 = pass, 1 = error
 func (c *Client) ExecutionStatus(txHash string) (status ExecutionStatus, err error) {
 	param := M{
@@ -24,8 +25,11 @@ func (c *Client) ExecutionStatus(txHash string) (status ExecutionStatus, err err
 }
 
 // ReceiptStatus checks transaction receipt status
+//
 // only applicable for post byzantium fork transactions, i.e. after block 4,370,000
+//
 // An special err ErrPreByzantiumTx raises for the transaction before byzantium fork.
+//
 // Note: receiptStatus: 0 = Fail, 1 = Pass.
 func (c *Client) ReceiptStatus(txHash string) (receiptStatus int, err error) {
 	param := M{