Documentation Improvement

When deploying for the first time the documentation mentioned I only required Claude models, however, it requires titan text embeddings as well.

I would recommend adding a snippet to enable the models prior to deploying.

issue 中没有指定文件或测试。首先定位首次部署文档及其中关于启用模型的说明，然后核实当前如何描述 Claude 模型。当文档涵盖 Titan Text embeddings，并包含所请求的部署前启用代码片段时，即视为完成。

由索引模型根据 Issue 内容生成。