doc: Fix Ubuntu Ceph version

Ubuntu Noble is using Ceph Squid, not Reef [1].

[1] https://packages.ubuntu.com/noble-updates/ceph

Change-Id: I11926e764909ec53bdd2a38d815a31253abd6868
Co-authored-by: Chema Peribáñez <[email protected]>
Signed-off-by: Pierre Riteau <[email protected]>

Author: priteau

doc/source/ceph_versions.csv

@@ -1,5 +1,5 @@
 Distro,Ceph,
 ,Source, Release
 Rocky Linux,CentOS Storage SIG,Reef
-Ubuntu,Ubuntu,Reef
+Ubuntu,Ubuntu,Squid
 Debian,Debian,Pacific