Add parameters definition

Author: alallema

meilisearch/index.py

@@ -256,6 +256,8 @@ def get_document(self, document_id: str, parameters: Optional[Dict[str, Any]] =
         ----------
         document_id:
             Unique identifier of the document.
+        parameters (optional):
+            parameters accepted by the get document route: https://docs.meilisearch.com/reference/api/documents.html#get-one-document
 
         Returns
         -------