Fix links to update guide

Author: dabrt

docs/release_notes/ibexa_dxp_v5.0.md

@@ -353,7 +353,7 @@ Refer to [Ibexa DXP v5.0 renames, deprecations and removals](ibexa_dxp_v5.0_depr
 
 [[% include 'snippets/release_50.md' %]]
 
-To update your application, see the [update instructions](update_to_5.0.md).
+To update your application, see the [update instructions](../update_and_migration/from_4.6/update_to_5.0.md).
 
 [[= release_note_entry_end() =]]
 

docs/release_notes/ibexa_dxp_v5.0_deprecations.md

@@ -7,7 +7,7 @@ This page lists backwards compatibility breaks and deprecations introduced in [[
 !!! tip "Upgrade to v5"
 
     For a guide on moving your project to v5.0,
-    see [Update and migration instructions](update_to_5.0.md).
+    see [Update and migration instructions](../update_and_migration/from_4.6/update_to_5.0.md).
 
 [[= product_name =]] v5.0 introduces further modifications to significant parts of the code to align with the ones introduced in previous versions.