Fixed a minor typo

auht => auth

Change-Id: I82dd6cdf0505aa2b17a339e4d8c1348bea1722fa
diff --git a/docs/SETUP.ssh b/docs/SETUP.ssh
index 7770d31..f67c19f 100644
--- a/docs/SETUP.ssh
+++ b/docs/SETUP.ssh
@@ -20,7 +20,7 @@
   systemctl --user start ssh-wmf-prod.service
 
 - Before using the SSH keys you need to load the keys into the SSH agents, unfortunately
-  it's a bit hacky as ssh-add doesn't allow to specify the auht socket via an option, so
+  it's a bit hacky as ssh-add doesn't allow to specify the auth socket via an option, so
   best to add a small script which does:
 
   export SSH_AUTH_SOCK=/run/user/1000/ssh-wmf-prod.socket