* Fix section for inventory cache prefix
* Redirect general config inventory cache options to inventory plugin documentation
* Update the template to fix the docs-build error
* removes 'default' entries for config settings with default: ''
* single backticks => italics, double backticks => code
* use 'Default: ~' to match other entries that have no default setting
Co-authored-by: Alicia Cozine <acozine@users.noreply.github.com>