ibexa_dxp_v4.6.md: Add missing version number

Author: adriendupuis

docs/release_notes/ibexa_dxp_v4.6.md

@@ -234,7 +234,7 @@ To learn more, see the [corresponding security advisory](https://developers.ibex
 
 [[% set version = 'v4.6.24' %]]
 
-[[= release_note_entry_begin("Collaboration ", '2025-09-09', ['Headless', 'Experience', 'Commerce', 'LTS Update', 'New feature', 'First release']) =]]
+[[= release_note_entry_begin("Collaboration " + version, '2025-09-09', ['Headless', 'Experience', 'Commerce', 'LTS Update', 'New feature', 'First release']) =]]
 
 #### Collaboration