Documentation: fix unexisting path sshd_config.phabricator.example

Summary:
Since the example file was renamed, this change makes the documentation consistent with it.

Also we added exactly one-space somewhere, to create a super-satisfying indentation an example block. You're welcome.

Ref T15006

Test Plan: Check that the documentation is at least 0.000001% better now.

Reviewers: O1 Blessed Committers, avivey

Reviewed By: O1 Blessed Committers, avivey

Subscribers: tobiaswiese, Matthew, Cigaryno

Maniphest Tasks: T15006

Differential Revision: https://we.phorge.it/D25410

Author: valerio-bozzolan

src/docs/user/userguide/diffusion_hosting.diviner

@@ -360,13 +360,13 @@ be owned by `root`, and the script must have `755` permissions:
 ```
 $ sudo chown root /path/to/somewhere/
 $ sudo chown root /path/to/somewhere/phorge-ssh-hook.sh
-$ sudo chmod 755 /path/to/somewhere/phorge-ssh-hook.sh
+$ sudo chmod 755  /path/to/somewhere/phorge-ssh-hook.sh
 ```
 
 If you don't do this, `sshd` will refuse to execute the hook.
 
 **Create `sshd_config` for Phorge**: Copy the template in
-`phorge/resources/sshd/sshd_config.phabricator.example` to somewhere like
+`phorge/resources/sshd/sshd_config.phorge.example` to somewhere like
 `/etc/ssh/sshd_config.phorge`.
 
 Open the file and edit the `AuthorizedKeysCommand`,