Add missing list resevedutxos docs (#3015)

docs/applications/server.md

@@ -175,6 +175,7 @@ the `-p 9999:9999` port mapping on the docker container to adjust for this.
  - `getaddressinfo` `address` - Returns list of all wallet accounts
     - `address` - Address to get information about
  - `getnewaddress` - Get a new address
+ - `listreservedutxos` - lists all utxos that are reserved in the wallet
  - `sendtoaddress` `address` `amount` `[options]` - Send money to the given address
     - `address` - Address to send to
     - `amount` - Amount to send in BTC

docs/wallet/wallet-rpc.md

@@ -3,6 +3,28 @@ title: Wallet RPC Examples
 id: wallet-rpc
 ---
 
+### `listreservedutxos`
+
+Lists all reserved utxos in the wallet.
+These utxos will not be unreserved unless you manually
+unreserve them with `lockunspent` or they are spent in the blockchain
+
+```bash
+bitcoin-s-cli listreservedutxos
+[
+  {
+    "outpoint": "1c22634fa282e71866a8b8c6732ec89eb5c46d30f9773486b0ae32770e8109e1",
+    "value": 2000
+  },
+  {
+    "outpoint": "2b12634fa282e71866a8b8c6732ec89eb5c46d30f9773486b0ae32770e810901",
+    "value": 1000
+  }
+]
+
+```
+
+
 ### `lockunspent`
 
 Locks all utxos in the wallet