docs: update sparkllm intro doc (langchain-ai#17848)

**Description:** update sparkllm intro doc.
**Issue:** None
**Dependencies:** None
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docs/docs/integrations/providers/sparkllm.mdx

@@ -4,6 +4,9 @@
 It has cross-domain knowledge and language understanding ability by learning a large amount of texts, codes and images.
 It can understand and perform tasks based on natural dialogue.
 
+## SparkLLM LLM Model
+An example is available at [example](/docs/integrations/llm/sparkllm).
+
 ## SparkLLM Chat Model
 An example is available at [example](/docs/integrations/chat/sparkllm).