multi: replace FundingLocked related docs

This commit replaces `FundingLocked` found in docs using the following
command,
```shell
find . -name "*.go" -exec sed -i '' 's/FundingLocked/ChannelReady/g' {} \;
find . -name "*.go" -exec sed -i '' 's/FundingLock/ChannelReady/g' {} \;
```

lnwire/funding_locked.go

@@ -8,9 +8,9 @@ import (
 	"github.com/lightningnetwork/lnd/tlv"
 )
 
-// FundingLocked is the message that both parties to a new channel creation
+// ChannelReady is the message that both parties to a new channel creation
 // send once they have observed the funding transaction being confirmed on the
-// blockchain. FundingLocked contains the signatures necessary for the channel
+// blockchain. ChannelReady contains the signatures necessary for the channel
 // participants to advertise the existence of the channel to the rest of the
 // network.
 type ChannelReady struct {
@@ -33,7 +33,7 @@ type ChannelReady struct {
 	ExtraData ExtraOpaqueData
 }
 
-// NewFundingLocked creates a new FundingLocked message, populating it with the
+// NewChannelReady creates a new ChannelReady message, populating it with the
 // necessary IDs and revocation secret.
 func NewChannelReady(cid ChannelID, npcp *btcec.PublicKey) *ChannelReady {
 	return &ChannelReady{
@@ -43,12 +43,12 @@ func NewChannelReady(cid ChannelID, npcp *btcec.PublicKey) *ChannelReady {
 	}
 }
 
-// A compile time check to ensure FundingLocked implements the lnwire.Message
+// A compile time check to ensure ChannelReady implements the lnwire.Message
 // interface.
 var _ Message = (*ChannelReady)(nil)
 
-// Decode deserializes the serialized FundingLocked message stored in the
-// passed io.Reader into the target FundingLocked using the deserialization
+// Decode deserializes the serialized ChannelReady message stored in the
+// passed io.Reader into the target ChannelReady using the deserialization
 // rules defined by the passed protocol version.
 //
 // This is part of the lnwire.Message interface.
@@ -80,7 +80,7 @@ func (c *ChannelReady) Decode(r io.Reader, pver uint32) error {
 	return nil
 }
 
-// Encode serializes the target FundingLocked message into the passed io.Writer
+// Encode serializes the target ChannelReady message into the passed io.Writer
 // implementation. Serialization will observe the rules defined by the passed
 // protocol version.
 //
@@ -107,7 +107,7 @@ func (c *ChannelReady) Encode(w *bytes.Buffer, pver uint32) error {
 }
 
 // MsgType returns the uint32 code which uniquely identifies this message as a
-// FundingLocked message on the wire.
+// ChannelReady message on the wire.
 //
 // This is part of the lnwire.Message interface.
 func (c *ChannelReady) MsgType() MessageType {

lnwire/fuzz_test.go

@@ -288,7 +288,7 @@ func FuzzFundingCreated(f *testing.F) {
 
 func FuzzChannelReady(f *testing.F) {
 	f.Fuzz(func(t *testing.T, data []byte) {
-		// Prefix with MsgFundingLocked.
+		// Prefix with MsgChannelReady.
 		data = prefixWithMsgType(data, MsgChannelReady)
 
 		// Pass the message into our general fuzz harness for wire