Fix serverless naming (#2137)

Author: Wauplin

README.md

@@ -141,7 +141,7 @@ The advantages are:
 
 - Free model or dataset hosting for libraries and their users.
 - Built-in file versioning, even with very large files, thanks to a git-based approach.
-- Hosted inference API for all models publicly available.
+- Serverless inference API for all models publicly available.
 - In-browser widgets to play with the uploaded models.
 - Anyone can upload a new model for your library, they just need to add the corresponding tag for the model to be discoverable.
 - Fast downloads! We use Cloudfront (a CDN) to geo-replicate downloads so they're blazing fast from anywhere on the globe.

docs/source/en/guides/inference.md

@@ -79,7 +79,7 @@ Visit the [Models](https://huggingface.co/models) page on the Hub to explore you
 
 ### Using a specific URL
 
-The examples we saw above use the free-hosted Inference API. This proves to be very useful for prototyping
+The examples we saw above use the Serverless Inference API. This proves to be very useful for prototyping
 and testing things quickly. Once you're ready to deploy your model to production, you'll need to use a dedicated infrastructure.
 That's where [Inference Endpoints](https://huggingface.co/docs/inference-endpoints/index) comes into play. It allows you to deploy
 any model and expose it as a private API. Once deployed, you'll get a URL that you can connect to using exactly the same