Update documentation to use `sagemaker-python-sdk` as opposed to `sagemaker`

**What did you find confusing? Please describe.**
Your documentation suggests we use` pip install sagemaker`, as opposed to `pip install sagemaker-python-sdk`

This is confusing because your conda forge channel for sagemaker stopped being upgraded at 2.198.0 while sagemaker-python-sdk continues on to 2.241.0. This seems like a bug/ miss in your documentation

**Describe how documentation can be improved**
Update all documentation to refer to
sagemaker-python-sdk

**Additional context**
I've had bugs in my dependency management because the old 'sagemaker' forge tries to pull exceedingly old and outdated versions of your CLI, breaking compatibility with current packages and breaking builds

`# conda
conda create -n sagemaker python=3.7
conda activate sagemaker
conda install sphinx=3.1.1 sphinx_rtd_theme=0.5.0
`

Links:

Outdated, should be removed: https://anaconda.org/conda-forge/sagemaker

Should update documentation to refer to this:
https://anaconda.org/conda-forge/sagemaker-python-sdk

在文档中搜索 `pip install sagemaker`、`sagemaker-python-sdk` 以及链接的 conda 软件包引用。更新相关的安装指南以使用 `sagemaker-python-sdk`，并删除或替换过时的 conda-forge 链接；完成的标准是文档始终指向当前软件包。

由索引模型根据 Issue 内容生成。