Updating #__modules table to fix bootstrap_size param for sample data

The same as https://github.com/joomla/joomla-cms/pull/2206, but during an update to fix it for existing sites.

It should only change the value of the `bootstrap_size` when it's set to 1 and leave all other options untouched and only change it for the two modules affected. Thus nothing should break for existing sites.

Please especially have a look at the sqlazure commands as I'm not familiar with that database.