channeldb: fix typo.

Author: ziggie1984

channeldb/channel.go

@@ -1804,7 +1804,7 @@ func (c *OpenChannel) ChanSyncMsg() (*lnwire.ChannelReestablish, error) {
 		currentCommitSecret[0] ^= 1
 
 		// If this is a tweakless channel, then we'll purposefully send
-		// a next local height taht's invalid to trigger a force close
+		// a next local height that's invalid to trigger a force close
 		// on their end. We do this as tweakless channels don't require
 		// that the commitment point is valid, only that it's present.
 		if c.ChanType.IsTweakless() {