fix: ensure newline at end of file in .code-samples.meilisearch.yaml

Author: Fayupable

.code-samples.meilisearch.yaml

@@ -686,4 +686,4 @@ patch_dynamic_search_rule_1: |-
 
   TaskInfo task = client.updateDynamicSearchRule("black-friday", rule);
 delete_dynamic_search_rule_1: |-
-  TaskInfo task = client.deleteDynamicSearchRule("black-friday");
+  TaskInfo task = client.deleteDynamicSearchRule("black-friday");