Clarify ``type`` rule note in docs
Clarify ``type`` rule note in docs

- Use double quotes on type rules
- Use quotes consistent with the ``type`` rule discription in above
  `.. list-table::`
- Clarify that ``list`` and ``dict`` refer to type rules and not python
  classes
- Fix Typo

nicolaiarocci/cerberus,pyeve/cerberus,funkyfuture/cerberus,funkyfuture/cerberus,nicolaiarocci/cerberus,pyeve/cerberus,dkellner/cerberus,dkellner/cerberus