Fixed some typos in modules.dockerio
Don't show the APT sources.list entry as 'Python' code in the docs.
Merge pull request #13995 from rallytime/typo_fix

Fixed some typos in modules.dockerio
Don't show SLS YAML code as 'Python' code in the docs.
Merge pull request #13996 from eliasp/doc-code-blocks

Corrected/improved code-block usage in salt.states.pkg