add fidelity bond messages to examples

Joinmarket-messaging-protocol.md

@@ -55,7 +55,7 @@ Encryption
 
 Public messages (broadcast to all other participants) are never encrypted.
 
-Private messages of command-type `fill`, `pubkey`, `error`, `orderbook`, `push`, `reloffer` and `absoffer` are sent in plaintext.
+Private messages of command-type `fill`, `pubkey`, `error`, `orderbook`, `push`, `reloffer`, `absoffer` and `tbond` are sent in plaintext.
 Messages of command-type `ioauth`, `auth`, `tx` and `sig` are sent encrypted.
 These rules are enforced [here](https://github.com/JoinMarket-Org/joinmarket/blob/35dc60848c201f1c071a00c885969d1cc458cbbf/joinmarket/message_channel.py#L13-L16) and [here](https://github.com/JoinMarket-Org/joinmarket/blob/35dc60848c201f1c071a00c885969d1cc458cbbf/joinmarket/message_channel.py#L818-L826).
 
@@ -105,6 +105,7 @@ Valid conversation sequences:
 | :---------:|:----:|:-------:|
 |!orderbook(public)|>>>||
 || <<<| ![rel\|abs]order (private)|
+|| <<<| !tbond (private)|
 
 | TAKER    |      | MAKER |
 | :---------:|:----:|:-------:|
@@ -122,7 +123,7 @@ Each taker may speak to many makers simultaneously and each maker may speak to m
 
 See "Definitions" section below for the key for the abbreviations.
 ```
-1: M: !ordertype [order details]!ordertype [orderdetails]... (NS)
+1: M: !ordertype [order details]!ordertype [orderdetails]!tbond [proof] ... (NS)
 ```
 
 ```