Typo in Populating the Vector Store example: collection_name_name should be collection_name

[hyeonsang010716]

Describe the bug
There is a small typo in the code snippet in the documentation at:
https://datastax.github.io/graph-rag/guide/get-started/#preparing-data

In the "Populating the Vector Store" section, the Chroma.from_documents function uses collection_name_name instead of collection_name.

To Reproduce
Steps to reproduce the behavior:

Go to the documentation page: https://datastax.github.io/graph-rag/guide/get-started/#preparing-data

Scroll to the Populating the Vector Store section

Observe the line:
collection_name_name="animals"

Expected behavior
The code should use the correct keyword argument:
collection_name="animals"

Environment (please complete the following information):

OS: N/A (doc issue)

Python Version: 3.12.9

Frameworks: LangChain-Chroma, LangChain-Graph-Retriever, graph_rag_example_helpers

Additional context
This typo can lead to runtime errors when users copy and paste the example.

Thanks!