fix: paginationFindConfig and li-language update

[clement-knox]

1. Flags the need to configure the limit of the paginationFindConfig value to ensure all data records are displayed in dashboards.

Will appear on: https://docs.livingdocs.io/customising/server-configuration/#documents

2. Makes explicit that li-language plugins have can a visible UI component in the editor

[ajwild]

Thanks for taking a look at this. I would prefer a link to the paginationFindConfig, or some extra text, each time we mention "Shows a max of 1000 filter options".