sync-keys: fix JS comment syntax from previous commit

sync-keys.js

@@ -40,7 +40,7 @@ const MONGO_URL = process.env.CLOUDRON_MONGODB_URL || process.env.MONGODB_URL;
 const PORTAL_URL = process.env.PORTAL_URL || "https://portal.inference.coop";
 const SYNC_TOKEN = process.env.LIBRECHAT_SYNC_TOKEN || "";
 const ENDPOINT_NAME = "Inference Co-op";
-const MCP_PLUGIN_KEY = "mcp:inference-image";
+const MCP_PLUGIN_KEY = "mcp_inference-image" // Constants.mcp_prefix is "mcp_" (underscore), not "mcp:";
 const MCP_AUTH_FIELD = "IC_API_KEY";
 
 if (!MONGO_URL) { console.error("FATAL: no MongoDB URL in environment"); process.exit(1); }