Update docs/inference-providers/register-as-a-provider.md

Co-authored-by: vb <[email protected]>

Author: SBrandeis

docs/inference-providers/register-as-a-provider.md

@@ -400,7 +400,7 @@ Inference-Id: unique-id-00131
 
 If your API is OpenAI-compatible, we expect that you expose LLM pricing information and context length through the [`/v1/models` endpoint](https://platform.openai.com/docs/api-reference/models/list).
 
-This helps power our [provider comparison table](https://huggingface.co/inference/models) and other provider selection features.
+This powers our [provider comparison table](https://huggingface.co/inference/models) and other provider selection features like `:cheapest` (which selects the cheapest provider for a model).
 
 
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