[DOCS] Fix links

Author: lcawl

docs/reference/elasticsearch/rest-apis/reindex-indices.md

@@ -58,7 +58,7 @@ The value of `requests_per_second` can be changed on a running reindex using the
 POST _reindex/r1A2WoRbTwKZ516z6NEs5A:36619/_rethrottle?requests_per_second=-1
 ```
 
-The task ID can be found using the [tasks API](tasks.md).
+The task ID can be found using the [task management APIs](https://www.elastic.co/docs/api/doc/elasticsearch/group/endpoint-tasks).
 
 Just like when setting it on the Reindex API, `requests_per_second` can be either `-1` to disable throttling or any decimal number like `1.7` or `12` to throttle to that level.
 Rethrottling that speeds up the query takes effect immediately, but rethrottling that slows down the query will take effect after completing the current batch.
@@ -387,7 +387,7 @@ GET my-new-index-000001/_doc/1
 
 ## Reindex daily indices [docs-reindex-daily-indices]
 
-You can use the reindex API in combination with [Painless](/reference/elasticsearch/scripting-languages/painless/painless.md) to reindex daily indices to apply a new template to the existing documents.
+You can use the reindex API in combination with [Painless](/reference/scripting-languages/painless/painless.md) to reindex daily indices to apply a new template to the existing documents.
 
 Assuming you have indices that contain documents like: