Support - fix some docs on ssh hosting

Summary: Fixes T6169 by using the new nav element on the existing troubleshooting hint the user missed. Fixes T6173 by implementing the user's suggestion.

Test Plan: Looked at docs and they looked good.

Reviewers: epriestley, chad

Reviewed By: chad

Subscribers: fas, epriestley, Korvin

Maniphest Tasks: T6169, T6173

Differential Revision: https://secure.phabricator.com/D10548

src/docs/user/userguide/diffusion_hosting.diviner

@@ -283,14 +283,23 @@ Some general tips for troubleshooting problems with SSH:
   - Check that you've configured `diffusion.ssh-user`.
   - Check that you've configured `phd.user`.
   - Make sure SSH serving is enabled for the repository you're trying to clone.
-    You can find this in "Edit Repository" -> "Hosting".
+    You can change this setting from a main repository screen in Diffusion by
+    {nav Edit Repository >
+    Edit Hosting >
+    Host Repository on Phabricator >
+    Save and Continue >
+    SSH Read Only or Read/Write >
+    Save Changes}.
   - Make sure you've added an SSH public key to your account. You can do this
-    in "Settings" -> "SSH Keys".
+    in {nav Settings >
+    SSH Public Keys}.
   - Make sure the main repository screen in Diffusion shows a clone/checkout
     command for SSH. If it doesn't, something above isn't set up correctly.
     You should see an `svn checkout svn+ssh://...`, `git clone ssh://...` or
     `hg clone ssh://...` command. Run that command verbatim to clone the
     repository.
+  - Check your `phabricator-ssh-hook.sh` file for proper settings.
+  - Check your `sshd_config.phabricator` file for proper settings.
 
 To troubleshoot SSH setup: connect to the server with `ssh`, without running
 a command. You may need to use the `-T` flag. You should see a message like