prioritise postgres in doc/update/patch_versions.md, assume postgres in doc/update/ruby.md

doc/update/patch_versions.md

@@ -38,12 +38,12 @@ Replace LATEST_TAG with the latest GitLab Shell tag you want to upgrade to, for
 ```bash
 cd /home/git/gitlab
-# MySQL
-sudo -u git -H bundle install --without development test postgres --deployment
-
 #PostgreSQL
 sudo -u git -H bundle install --without development test mysql --deployment
+# MySQL
+sudo -u git -H bundle install --without development test postgres --deployment
+
 sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production
 sudo -u git -H bundle exec rake assets:clean RAILS_ENV=production
 sudo -u git -H bundle exec rake assets:precompile RAILS_ENV=production

doc/update/ruby.md

@@ -41,7 +41,7 @@ Just to be sure we will reinstall the gems used by GitLab. Note that the `bundle
 ```bash
 cd /home/git/gitlab
 sudo -u git -H rm -rf vendor/bundle  # remove existing Gem bundle
-sudo -u git -H bundle install --deployment --without development test postgres aws # Assuming MySQL
+sudo -u git -H bundle install --deployment --without development test mysql aws # Assuming PostgreSQL
 ```
 ### 6. Start GitLab