Merge pull request #6574 from nextcloud/fix/print_size

fix(css): Set page `size: auto` instead of `size: A4`

Author: mejo-

src/css/print.scss

@@ -5,7 +5,7 @@
 
  @media print {
 	@page {
-		size: A4;
+		size: auto;
 		margin: 2.5cm 2cm 2cm 2.5cm;
 	}