Fixes code block directives
Fixes code block directives

- s/codeblock/code-block/
- fixes code block being nested because of previous literal block `::`

kronenpj/python-for-android,germn/python-for-android,kronenpj/python-for-android,germn/python-for-android,kronenpj/python-for-android,kronenpj/python-for-android,rnixx/python-for-android,kivy/python-for-android,rnixx/python-for-android,kivy/python-for-android,kivy/python-for-android,germn/python-for-android,rnixx/python-for-android,PKRoma/python-for-android,rnixx/python-for-android,kivy/python-for-android,germn/python-for-android,rnixx/python-for-android,PKRoma/python-for-android,germn/python-for-android,rnixx/python-for-android,PKRoma/python-for-android,kivy/python-for-android,kronenpj/python-for-android,germn/python-for-android,PKRoma/python-for-android,PKRoma/python-for-android