Wrong URL for the models.

Note: the models are not there yet. I made a PR for this on the fastembed part (qdrant/fastembed#393)

integrations/fastembed/src/haystack_integrations/components/rankers/fastembed/ranker.py

@@ -45,7 +45,7 @@ def __init__(
         """
         Creates an instance of the 'FastembedRanker'.
 
-        :param model_name: Fastembed model name. Check the list of supported models in the [Fastembed documentation](https://docs.Fastembed.com/docs/models).
+        :param model_name: Fastembed model name. Check the list of supported models in the [Fastembed documentation](https://qdrant.github.io/fastembed/examples/Supported_Models/).
         :param top_k: The maximum number of documents to return.
         :param cache_dir: The path to the cache directory.
                 Can be set using the `FASTEMBED_CACHE_PATH` env variable.