Update date format in product user manual

Author: mckeea

DOCS/Urban_Atlas/CLMS_UA2021_LULC_PUM_v1.qmd

@@ -1,7 +1,7 @@
 ---
 title: "Urban Atlas 2021 – Product User Manual"
 subtitle: "Copernicus Land Monitoring Service – Priority Area Monitoring – Urban Atlas 2021 and 2024"
-date: "05/02/2026"
+date: "2026-02-05"
 version: 1.2
 
 category: products
@@ -1435,4 +1435,4 @@ In cases over the sea or within large forest masses, and for small areas, it may
 
 |Version|Applicable document|
 |--|--|
-|AD-1|Urban Atlas 2021 – Algorithm Theoretical Basis Document (ATBD)|
+|AD-1|Urban Atlas 2021 – Algorithm Theoretical Basis Document (ATBD)|