[DOCS] Fixed broken link.

docs/reference/upgrade/cluster_restart.asciidoc

@@ -101,7 +101,7 @@ PUT _cluster/settings
 ------------------------------------------------------
 // CONSOLE
 
-NOTE: Because <<cluster-update-settings.html#_precedence_of_settings, transient
+NOTE: Because <<_precedence_of_settings, transient
 settings take precedence over persistent settings>>, this overrides the
 persistent setting used to disable shard allocation in the first step. If you
 don't explicitly reenable shard allocation after a full cluster restart, the

docs/reference/upgrade/rolling_upgrade.asciidoc

@@ -69,7 +69,7 @@ GET _cat/nodes
 +
 --
 
-NOTE: Because <<cluster-update-settings.html#_precedence_of_settings, transient
+NOTE: Because <<_precedence_of_settings, transient
 settings take precedence over persistent settings>>, this overrides the
 persistent setting used to disable shard allocation in the first step. If you
 don't explicitly reenable shard allocation after a full cluster restart, the