Merge pull request saltstack#37105 from rklaren/libvirt-doc-fix

Fix link in libvirt docs

doc/topics/cloud/libvirt.rst

@@ -6,7 +6,7 @@ Libvirt is a toolkit to interact with the virtualization capabilities of recent
 of Linux (and other OSes). This driver Salt cloud provider is currently geared towards
 libvirt with qemu-kvm.
 
-http://www.proxmox.org/
+http://www.libvirt.org/
 
 Dependencies
 ============