docs: add openai/o3-deep-research (#369)

Author: StanAIML

docs/SUMMARY.md

@@ -264,6 +264,7 @@
     * [Gpt Chat Latest](api-references/text-models-llm/openai/gpt-chat-latest.md)
     * [Gpt Oss Safeguard 20B](api-references/text-models-llm/openai/gpt-oss-safeguard-20b.md)
     * [O1 Pro](api-references/text-models-llm/openai/o1-pro.md)
+    * [O3 Deep Research](api-references/text-models-llm/openai/o3-deep-research.md)
   * [Perplexity](api-references/text-models-llm/perplexity/README.md)
     * [Sonar](api-references/text-models-llm/perplexity/sonar.md)
     * [Sonar Pro](api-references/text-models-llm/perplexity/sonar-pro.md)