docs: Add note on updates for rpm-based distros

Author: daftaupe

docs/content/overview/installing.md

@@ -83,10 +83,10 @@ Cons:
 * Might not be the latest version, especially if you are using an older stable version (e.g., Ubuntu 16.04 LTS).
   Until backports and PPA are available, you may consider installing the Hugo snap package to get the latest version of Hugo, as described below.
 
-### Fedora and Red Hat
+### Fedora, CentOS and Red Hat
 
 * https://copr.fedorainfracloud.org/coprs/spf13/Hugo/ (updated to Hugo v0.16)
-* https://copr.fedorainfracloud.org/coprs/daftaupe/hugo/ (updated to Hugo v0.19)
+* https://copr.fedorainfracloud.org/coprs/daftaupe/hugo/ (updated to Hugo v0.22) : usually released a few days after the official Hugo release.
 
 See also [this discussion](https://discuss.gohugo.io/t/solved-fedora-copr-repository-out-of-service/2491).