mpt_holders documentation cleanup

resources/dev-tools/components/websocket-api/data/command-list.json

@@ -409,6 +409,23 @@
       }
     ]
   },
+  {
+    "group": "MPT Methods",
+    "methods": [
+      {
+        "name": "mpt_holders",
+        "description": "Return all holders of an MPT and their balance (Clio only).",
+        "link": "/docs/references/http-websocket-apis/public-api-methods/clio-methods/mpt_holders",
+        "clio_only": true,
+        "body": {
+          "id": "example_mpt_holders",
+          "command": "mpt_holders",
+          "mpt_issuance_id": "0024D204E07DDDFBCD83B1649C07FE27FD536A3A32E6FDD8",
+          "ledger_index": "validated"
+        }
+      }
+    ]
+  },
   {
     "group": "NFT Methods",
     "methods": [