ui: ceph warnings: render whitespace as pre-wrap

To avoid potential horizontal scrolling on smaller screens, which can
be a PITA as the scroll bar is at the bottom, so users have to scroll
down to move it left and right..

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/css/ext6-pve.css

@@ -712,6 +712,7 @@ table.osds td:first-of-type {
 
 .pve-ceph-warning-detail {
     overflow: auto;
+    white-space: pre-wrap;
     margin: 0;
     padding-bottom: 10px;
 }