fix: name of llama-3.3-70b-specdec (#11596)

api/core/model_runtime/model_providers/groq/llm/llama-3.3-70b-specdec .yaml

-model: llama-3.3-70b-specdec
-label:
-  zh_Hans: Llama 3.3 70b Speculative Decoding  (PREVIEW)
-  en_US: Llama 3.3 70b Speculative Decoding (PREVIEW)
-model_type: llm
-features:
-  - agent-thought
-model_properties:
-  mode: chat
-  context_size: 131072
-parameter_rules:
-  - name: temperature
-    use_template: temperature
-  - name: top_p
-    use_template: top_p
-  - name: max_tokens
-    use_template: max_tokens
-    default: 512
-    min: 1
-    max: 8192
-pricing:
-  input: '0.05'
-  output: '0.1'
-  unit: '0.000001'
-  currency: USD