Fix KNN docs

Author: afoucret

docs/reference/query-languages/esql/_snippets/functions/parameters/knn.md

@@ -153,7 +153,7 @@ public Knn(
                         + "(docs-content://solutions/search/vector/knn.md#dense-vector-knn-search-rescoring) for details."
                 ), },
             description = "(Optional) kNN additional options as <<esql-function-named-params,function named parameters>>."
-                + " See <<query-dsl-knn-query,knn query>> for more information.",
+                + " See [knn query](/reference/query-languages/query-dsl/query-dsl-knn-query.md) for more information.",
             optional = true
         ) Expression options
     ) {