Fix header logo size in notification mails
Fix header logo size in notification mails

Signed-off-by: Simon Spannagel <385979ae470214a5c3123d1805a076c8e5e65bb4@kth.se>

nextcloud/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,nextcloud/server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,nextcloud/server,nextcloud/server,andreas-p/nextcloud-server