DOC FIX: Fixing style, syntax and links.

src/doc/CaosDB-Query-Language.md

src/doc/Permissions.rst

src/doc/administration/configuration.rst

src/doc/administration/maintenance.rst

src/doc/administration/server_side_scripting.rst

src/doc/conf.py

src/doc/index.rst

src/doc/roles.md

src/doc/specification/AbstractProperty.md

src/doc/specification/RecordType.md