chore: fix some comments (#650)

Signed-off-by: wangjingcun <[email protected]>

Author: wangjingcun

cmd/utils/flags.go

@@ -2144,7 +2144,7 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	// Since EthProtocolsFlag defines a default value that is the ethconfig.Defaults slice,
 	// we can always parse and act on this value whether or not the user sets the flag.
 	// Since our logic here will append to the parameterized 'cfg' value ProtocolVersions field,
-	// we need to make sure that that value starts empty.
+	// we need to make sure that value starts empty.
 	cfg.ProtocolVersions = []uint{}
 
 	seenVersions := map[uint]interface{}{}

eth/handler_eth_test.go

@@ -397,7 +397,7 @@ func testTransactionPropagation(t *testing.T, protocol uint) {
 	}
 	// Interconnect all the sink handlers with the source handler
 	for i, sink := range sinks {
-		sink := sink // Closure for gorotuine below
+		sink := sink // Closure for goroutine below
 
 		sourcePipe, sinkPipe := p2p.MsgPipe()
 		defer sourcePipe.Close()
@@ -619,7 +619,7 @@ func testBroadcastBlock(t *testing.T, peers, bcasts int) {
 		td      = source.chain.GetTd(genesis.Hash(), genesis.NumberU64())
 	)
 	for i, sink := range sinks {
-		sink := sink // Closure for gorotuine below
+		sink := sink // Closure for goroutine below
 
 		sourcePipe, sinkPipe := p2p.MsgPipe()
 		defer sourcePipe.Close()