Composer documentation is present on updating in non-composer based environments page

[RCheesley]

https://docs.mautic.org/en/5.x/getting_started/how_to_update_mautic.html#updating-at-the-command-line-non-composer-based-installations

This should be showing non-composer but it immediately talks about Composer.

The section titled 'Updating Mautic (Composer based installs)' should come after 'Installing updates at the command line' so it needs to be moved.