Update docs/reference/elasticsearch/rest-apis/retrievers.md

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

Author: mridula-s109

docs/reference/elasticsearch/rest-apis/retrievers.md

@@ -276,7 +276,7 @@ Each entry specifies the following parameters:
 `normalizer`
 :   (Optional, String)
 
-    Specifies how we will normalize the retriever’s scores, before applying the specified `weight`. Available values are: `minmax`, `l2_norm`, and `none`. Defaults to `none`.
+    - Specifies how we will normalize the retriever’s scores, before applying the specified `weight`. Available values are: `minmax`, `l2_norm`, and `none`. Defaults to `none`.
 
     * `none`
     * `minmax` : A `MinMaxScoreNormalizer` that normalizes scores based on the following formula