trivial: Fix spelling errors

- Fixes some spelling in code comments and a couple of function names

lnwallet/btcwallet/psbt.go

@@ -67,7 +67,7 @@ func (b *BtcWallet) FundPsbt(packet *psbt.Packet, minConfs int32,
 
 	switch accountName {
 	// For default accounts and single imported public keys, we'll provide a
-	// nil key scope to FundPsbt, allowing it to select nputs from all
+	// nil key scope to FundPsbt, allowing it to select inputs from all
 	// scopes (NP2WKH, P2WKH, P2TR). By default, the change key scope for
 	// these accounts will be P2WKH.
 	case lnwallet.DefaultAccountName:

lnwallet/chainfee/estimator_test.go

@@ -189,7 +189,7 @@ func TestWebAPIFeeEstimator(t *testing.T) {
 			expectedErr:     "",
 		},
 		{
-			// When requested target is smaller than the min cahced
+			// When requested target is smaller than the min cached
 			// target, the fee rate of the min cached target is
 			// returned.
 			name:            "API-omitted_target",

lnwallet/chancloser/chancloser.go

@@ -39,10 +39,10 @@ var (
 	ErrUpfrontShutdownScriptMismatch = fmt.Errorf("shutdown script does not " +
 		"match upfront shutdown script")
 
-	// ErrProposalExeceedsMaxFee is returned when as the initiator, the
+	// ErrProposalExceedsMaxFee is returned when as the initiator, the
 	// latest fee proposal sent by the responder exceed our max fee.
 	// responder.
-	ErrProposalExeceedsMaxFee = fmt.Errorf("latest fee proposal exceeds " +
+	ErrProposalExceedsMaxFee = fmt.Errorf("latest fee proposal exceeds " +
 		"max fee")
 
 	// ErrInvalidShutdownScript is returned when we receive an address from
@@ -526,7 +526,7 @@ func (c *ChanCloser) ProcessCloseMsg(msg lnwire.Message) ([]lnwire.Message,
 		// use this when we craft the closure transaction.
 		c.remoteDeliveryScript = shutdownMsg.Address
 
-		// Now that we know their desried delivery script, we can
+		// Now that we know their desired delivery script, we can
 		// compute what our max/ideal fee will be.
 		c.initFeeBaseline()
 
@@ -722,7 +722,7 @@ func (c *ChanCloser) ProcessCloseMsg(msg lnwire.Message) ([]lnwire.Message,
 			)
 			if c.cfg.Channel.IsInitiator() && feeProposal > c.maxFee {
 				return nil, false, fmt.Errorf("%w: %v > %v",
-					ErrProposalExeceedsMaxFee, feeProposal,
+					ErrProposalExceedsMaxFee, feeProposal,
 					c.maxFee)
 			}
 
@@ -902,7 +902,7 @@ func (c *ChanCloser) proposeCloseSigned(fee btcutil.Amount) (*lnwire.ClosingSign
 	closeSignedMsg := lnwire.NewClosingSigned(c.cid, fee, parsedSig)
 
 	// For musig2 channels, the main sig is blank, and instead we'll send
-	// over a partial signature which'll be combine donce our offer is
+	// over a partial signature which'll be combined once our offer is
 	// accepted.
 	if partialSig != nil {
 		closeSignedMsg.PartialSig = &partialSig.PartialSig

lnwallet/chancloser/chancloser_test.go

@@ -402,12 +402,16 @@ func TestMaxFeeBailOut(t *testing.T) {
 			// If we're the initiator, then we expect an error at
 			// this point.
 			case true:
-				require.ErrorIs(t, err, ErrProposalExeceedsMaxFee)
+				require.ErrorIs(
+					t, err, ErrProposalExceedsMaxFee,
+				)
 
 			// Otherwise, we expect things to fail for some other
 			// reason (invalid sig, etc).
 			case false:
-				require.NotErrorIs(t, err, ErrProposalExeceedsMaxFee)
+				require.NotErrorIs(
+					t, err, ErrProposalExceedsMaxFee,
+				)
 			}
 		})
 	}

lnwallet/chanfunding/coin_select.go

@@ -271,7 +271,7 @@ func CoinSelectUpToAmount(feeRate chainfee.SatPerKWeight, minAmount, maxAmount,
 	)
 
 	// Get total balance from coins which we need for reserve considerations
-	// and fee santiy checks.
+	// and fee sanity checks.
 	var totalBalance btcutil.Amount
 	for _, coin := range coins {
 		totalBalance += btcutil.Amount(coin.Value)