[DOCS] Correct GET path in cat tasks API docs (#49494)

Previously, the request example included `GET _cat/_tasks`. However, the resource should be `tasks`, not `_tasks`.

Author: kellycampbell

docs/reference/cat/tasks.asciidoc

@@ -13,9 +13,9 @@ similar to the <<tasks,task management>> API.
 [[cat-tasks-api-request]]
 ==== {api-request-title}
 
-`GET /_cat/_tasks/<task_id>`
+`GET /_cat/tasks/<task_id>`
 
-`GET /_cat/_tasks`
+`GET /_cat/tasks`
 
 
 [[cat-tasks-api-desc]]