Update _index.md

Typo

content/connecting/_index.md

@@ -13,6 +13,7 @@ How to connect to HCC resources
 **3. Connect to an HCC cluster:** From the terminal or application, use SSH to connect to one of the available clusters. In the terminal, enter `ssh <username>@crane.unl.edu` to connector to the Crane cluster, for example. With [PuTTY]({{< relref "putty.md" >}}) or [MobaXterm]({{< relref "mobaxterm.md" >}}), refer to their respective pages for a guide on how to connect 
 
 If you are not familiar with using command line Linux, check out these resources:
+
  - [Basic Linux Commands]({{< relref "basic_linux_commands">}})
  - [Software Carpentry Introduction to the Unix Shell Lesson](http://swcarpentry.github.io/shell-novice/)