We need to rename files of pages to their desired name by removing their prefix.
This shouldn't matter in Jekyll as we already use permalinks for every page.

Examples:

• content/docs/configuration/advanced/configuration-action.md becomes content/docs/configuration/advanced/-action.md
• content/docs/installation/building-from-source/installation-source-configuration.md becomes content/docs/installation/building-from-source/configuration.md