Fix failing links in documentation (#5248)

Co-authored-by: Simon Dumas <[email protected]>

docs/src/main/paradox/docs/delta/api/views/aggregated-es-view-api.md

@@ -10,7 +10,7 @@ From Delta version 1.5.0,  `AggregateElasticSearchView` can point to other `Aggr
 @@@
 
 When performing queries on the `_search` endpoint, this view will make use of the 
-@link:[multi-index](https://www.elastic.co/guide/en/elasticsearch/reference/current/multi-index.html){ open=new } query 
+@link:[multi-index](https://www.elastic.co/guide/en/elasticsearch/reference/current/api-conventions.html#api-multi-index){ open=new } query 
 capabilities of ElasticSearch in order to select the indices of every view present on this aggregate view.
 
 If the caller does not have the permission views/query (or from v1.5, the user-defined permission) on all the views defined on the aggregated view,

docs/src/main/paradox/docs/releases/v1.8-release-notes.md

@@ -36,7 +36,7 @@ However, Cassandra became a growing problem for Nexus both in development and pr
 * The eventual consistency was another hurdle for the Nexus usages
 
 * The akka-persistence library we relied on 
-which is part of the akka stack changed @link:[its license in September 2022](https://www.lightbend.com/blog/why-we-are-changing-the-license-for-akka), 
+which is part of the akka stack changed @link:[its license in September 2022](https://akka.io/blog/why-we-are-changing-the-license-for-akka), 
 so we could not get new updates from it,
 
 * This library also did not fit anymore our needs in terms of indexing to external systems as performance is degrading over time