Fix code samples for multi search

Author: curquiza

.code-samples.meilisearch.yaml

@@ -1545,6 +1545,8 @@ tenant_token_guide_search_sdk_1: |-
     .unwrap();
 multi_search_1: |-
   let movie = client.index("movie");
+  let movie_ratings = client.index("movie_ratings");
+
   let search_query_1 = SearchQuery::new(&movie)
       .with_query("pooh")
       .with_limit(5)
@@ -1553,26 +1555,18 @@ multi_search_1: |-
       .with_query("nemo")
       .with_limit(5)
       .build();
+  let search_query_3 = SearchQuery::new(&movie_ratings)
+      .with_query("us")
+      .build();
 
-  let movie_response = client
+  let response = client
       .multi_search()
       .with_search_query(search_query_1)
       .with_search_query(search_query_2)
-      .execute::<Movie>()
+      .with_search_query(search_query_3)
+      .execute::<Document>()
       .await
       .unwrap();
-
-  let movie_ratings = client.index("movie_ratings");
-  let search_query_3 = SearchQuery::new(&movie_ratings)
-      .with_query("us")
-      .build();
-
-  let movie_ratings_response = client
-    .multi_search()
-    .with_search_query(search_query_3)
-    .execute::<MovieRatings>()
-    .await
-    .unwrap();
 get_experimental_features_1: |-
   let client = Client::new("http://localhost:7700", Some("apiKey"));
   let features = ExperimentalFeatures::new(&client);