Reorder the `--without` arugments so the database comes first

Hopefully this will make it a bit clearer that we're excluding a certain
database type.

[ci skip]

doc/update/7.14-to-8.0.md

@@ -96,11 +96,11 @@ See `lib/support/init.d/gitlab.default.example` for the options.
 ```bash
 cd /home/git/gitlab
 
-# MySQL installations (note: the line below states '--without ... postgres')
-sudo -u git -H bundle install --without development test postgres --deployment
+# MySQL installations (note: the line below states '--without postgres')
+sudo -u git -H bundle install --without postgres development test --deployment
 
-# PostgreSQL installations (note: the line below states '--without ... mysql')
-sudo -u git -H bundle install --without development test mysql --deployment
+# PostgreSQL installations (note: the line below states '--without mysql')
+sudo -u git -H bundle install --without mysql development test --deployment
 
 # Run database migrations
 sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production