Typo in GroundingMetadata: “groundingChuncks” should be “groundingChunks”

[Neddes]

Description of the bug:

The GroundingMetadata interface in the SDK contains a typo in one of its properties. The property groundingChuncks is misspelled and should be corrected to groundingChunks.

The official documentation lists the property correctly as groundingChunks, which you can verify here:
Google Gemini API Documentation - Grounding

Affected File:
generative-ai.groundingmetadata.groundingchuncks.md

Actual vs expected behavior:

Actual Behavior:
The property is spelled as groundingChuncks.
Expected Behavior:
The property should be spelled as groundingChunks.

Any other information you'd like to share?

This is a minor issue but can impact code clarity and consistency

[ashphy]

Duplicate of #317