fixed spelling mistake - 'yo tour' to 'to your'

app/views/projects/empty.html.haml

 - if current_user.require_ssh_key?
   .alert-message.block-message.error
     %ul
-      %li You have no ssh keys added yo tour profile.
+      %li You have no ssh keys added to your profile.
       %li You wont be able to pull/push repository. 
       %li Visit profile → keys and add public key of every machine you want to use for work with gitlabhq.