[Cookbook] Nemotron3-Ultra: align MTP draft depth with NVIDIA reference (num_steps 5) (#29200)

Co-authored-by: Brayden Zhong <brayden@radixark.ai>

docs_new/src/snippets/autoregressive/nemotron3-ultra-deployment.jsx

@@ -143,7 +143,7 @@ export const Nemotron3UltraDeployment = () => {
         { id: 'enabled',  label: 'Enabled',  default: true  },
         { id: 'disabled', label: 'Disabled', default: false }
       ],
-      commandRule: (value) => value === 'enabled' ? '--speculative-algorithm EAGLE \\\n  --speculative-num-steps 3 \\\n  --speculative-eagle-topk 1 \\\n  --speculative-num-draft-tokens 4' : null
+      commandRule: (value) => value === 'enabled' ? '--speculative-algorithm EAGLE \\\n  --speculative-num-steps 5 \\\n  --speculative-eagle-topk 1 \\\n  --speculative-num-draft-tokens 6' : null
     },
     kvcache: {
       name: 'kvcache',