Merge branch 'anvil-image' into 'master'

Update Anvil images list.

See merge request !191

static/markdown/anvil-images.md

@@ -5,8 +5,10 @@
 | CentOS 6.9	           |   `centos`           | `ssh -l centos@<ip address>`         | **HCC Standard OS**. The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL).|
 | Fedora 28 Cloud          |   `fedora`           | `ssh -l fedora <ipaddress>`          | Fedora is a Linux distribution developed by the community-supported Fedora Project and sponsored by the Red Hat company.|
 | Fedora 29 Cloud	   |   `fedora`           | `ssh -l fedora <ipaddress>`          | Fedora is a Linux distribution developed by the community-supported Fedora Project and sponsored by the Red Hat company.|
-| Fedora 26 RStudio (Xfce) |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 26 with the Xfce Desktop Environment pre-installed.|
-| Fedora 28 RStudio (Xfce) |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 28 with the Xfce Desktop Environment pre-installed.|
+| Fedora 28 RStudio (Xfce) |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 28 with Rstudio and Xfce pre-installed.|
+| Fedora 31 RStudio (Xfce) |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 31 with Rstudio and Xfce pre-installed.|
+| Fedora 28 Xfce           |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 28 with the Xfce Desktop Environment pre-installed.|
+| Fedora 31 Xfce           |   `fedora`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Fedora 31 with the Xfce Desktop Environment pre-installed.|
 | CentOS 7.4 Xfce          |   `centos`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | CentOS 7.4 with the Xfce Desktop Environment pre-installed.|
 | CentOS 6.9 Xfce          |   `centos`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | CentOS 6.9 with the Xfce Desktop Environment pre-installed.|
 | Ubuntu 14.04 Xfce        |   `ubuntu`            |[X2Go instructions]({{< relref "connecting_to_linux_instances_using_x2go" >}}) | Ubuntu 14.04 with the Xfce Desktop Environment pre-installed.|