add documentation link

Author: taylordolan

client/directives/modals/settingsModal/forms/SSHKeysForm/SSHKeysFormView.jade

@@ -1,6 +1,11 @@
 section.label-description
   .label-col SSH Keys
-  .small.text-gray Keys will be added to containers at build and run time, and can be  
+  .small.text-gray Keys will be added to containers at build and run time 
+    a.link(
+      href = "#"
+      target = "_blank"
+    ) using ssh-agent
+    | , and can be 
     a.link(
       href = "https://github.com/settings/keys"
       target = "_blank"