[Page Feedback]: Lack of Sampling documentation for Rust

[asapple]

URL

https://opentelemetry.io/docs/languages/rust/

Description

What needs to be changed?
The OpenTelemetry documentation for Rust is missing a dedicated section on how to configure and use Samplers. While there is general documentation on the concept of sampling, there is no language-specific guide for Rust developers.

In contrast, other language-specific sections, such as for Go and Python, have detailed pages on sampling. A similar page should be created for Rust to guide users on implementing head-based sampling with the Rust SDK.

What is the name + path of the page that needs changed?
The page that would logically link to this new content is the main Rust documentation page:
Page Title: Sampling
Path: /docs/languages/rust/sampling

Additional context
Without this documentation, Rust users have to rely on digging through API documentation on docs.rs or find third-party guides to understand how to configure sampling. Adding this guide would significantly improve the getting-started experience for developers using OpenTelemetry with Rust.

Tip

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[asapple]

I'm going to work on a pull request to address the documentation gap I outlined in this issue.

[theletterf]

Thanks @asapple.

+CC @open-telemetry/rust-approvers