chore: fix some comments

Signed-off-by: jinjingroad <jinjingroad@sina.com>

loopdb/protocol_version.go

@@ -32,7 +32,7 @@ const (
 	ProtocolVersionUserExpiryLoopOut ProtocolVersion = 4
 
 	// ProtocolVersionHtlcV2 indicates that the client will use the new
-	// HTLC v2 scrips for swaps.
+	// HTLC v2 scripts for swaps.
 	ProtocolVersionHtlcV2 ProtocolVersion = 5
 
 	// ProtocolVersionMultiLoopIn indicates that the client creates a probe

routing_plugin.go

@@ -513,7 +513,7 @@ func (r *lowToHighRoutingPlugin) BeforePayment(ctx context.Context,
 	// Calculate the limit until we'll disable edges. The way we calculate
 	// this limit is that we take the minimum and maximum fee peers which
 	// define our fee range. Within this fee range we'll scale linearly
-	// where each step euqals to the range divided by maxAttempts.
+	// where each step equals to the range divided by maxAttempts.
 	minFee := r.nodesByMaxFee[0].fee
 	maxFee := r.nodesByMaxFee[len(r.nodesByMaxFee)-1].fee
 	limit := minFee +

swap/htlc.go

@@ -41,7 +41,7 @@ const (
 	HtlcV3
 )
 
-// htlcScript defines an interface for the different HTLC implementations.
+// HtlcScript defines an interface for the different HTLC implementations.
 type HtlcScript interface {
 	// genSuccessWitness returns the success script to spend this htlc with
 	// the preimage.

swap_server_client.go

@@ -636,7 +636,7 @@ const (
 	paymentTypeInvoice
 )
 
-// routeCancelMetadata contains cancelation information for swaps that are
+// routeCancelMetadata contains cancellation information for swaps that are
 // canceled because the client could not route off-chain to the server.
 type routeCancelMetadata struct {
 	// paymentType is the type of payment that failed.