This is for similar reasons as posted in this existing feature request:
https://redgate.uservoice.com/forums/936348-sql-toolbelt-essentials/suggestions/44666800-sql-doc-cover-page-options

We as vendors provide database documentation to our clients for our product. We would like a way to alias, or otherwise provide a friendly name, to the database we target when generating PDF documentation. It is not desired to expose internal databases name. We would rather see the database show up throughout the documentation with a friendly name like "Template Database." Rather than exposing an internal database naming scheme. This friendly name would be used in the cover page, table of contents, and anywhere it showed throughout the PDF documentation.

It is not desirable to have to export generation to Microsoft Word, customize, then resave as PDF. For starters, this makes the process harder to fully automate as it involves human intervention. Secondly, PDFs generated from Microsoft Word have a lot of size bloat due to how Microsoft embeds styles and fonts into PDF. A 2.13MB MS Word file can turn into a 13.7MB PDF.

This sort of feature would also be incredibly useful for the server information and documentation file path. This is sensitive information that should not be exposed to customers.