(trivial) fix type annotation

electrum/lnchannel.py

@@ -707,7 +707,7 @@ class Channel(Logger):
         return int(self.config[LOCAL].multisig_key.pubkey > self.config[REMOTE].multisig_key.pubkey)
 
     def make_closing_tx(self, local_script: bytes, remote_script: bytes,
-                        fee_sat: int) -> Tuple[bytes, int, str]:
+                        fee_sat: int) -> Tuple[bytes, Transaction]:
         """ cooperative close """
         _, outputs = make_commitment_outputs({
                     LOCAL:  fee_sat * 1000 if     self.constraints.is_initiator else 0,

electrum/lnpeer.py

@@ -1359,7 +1359,7 @@ class Peer(Logger):
             their_sig = cs_payload['signature']
             if our_fee == their_fee:
                 break
-            # TODO: negociate better
+            # TODO: negotiate better
             our_fee = their_fee
         # index of our_sig
         i = chan.get_local_index()