Add missing message on dispute

Author: grunch

src/dispute.md

@@ -122,6 +122,26 @@ Mostro will send a confirmation message to the admin with the order details:
 }
 ```
 
+Then mostrod send messages to each trade participat, the buyer and seller for them to know the pubkey of the admin who took the dispute, that way the client can start listening events from that specific pubkey, by default clients should discard any messages received from any pubkey different than Mostro node or dispute solver, the message looks like this:
+
+```json
+[
+  {
+    "order": {
+      "version": 1,
+      "id": "<Order Id>",
+      "action": "admin-took-dispute",
+      "payload": {
+        "peer": {
+          "pubkey": "<Solver's pubkey>"
+        }
+      }
+    }
+  },
+  null
+]
+```
+
 Also Mostro will broadcast a new addressable dispute event to update the dispute `status` to `in-progress`:
 
 ```json

src/fiatsent.md

@@ -41,7 +41,7 @@ Mostro send messages to both parties confirming `fiat-sent` action and sending a
     "id": "<Order Id>",
     "action": "fiat-sent-ok",
     "payload": {
-      "Peer": {
+      "peer": {
         "pubkey": "<Seller's trade pubkey>"
       }
     }
@@ -59,7 +59,7 @@ And here an example of the message from Mostro to the seller:
     "pubkey": "<Seller's trade pubkey>",
     "action": "fiat-sent-ok",
     "payload": {
-      "Peer": {
+      "peer": {
         "pubkey": "<Buyer's trade pubkey>"
       }
     }