Fix sphinx warning

This commit fixes a sphinx warning when building the docstring, that
complains that the link target 'eselect' is not defined.
Audit module documentation (L to O)

This commit continues the work started in 7d4739d, putting CLI examples
in bash code-blocks to give them syntax highlighting on
docs.saltstack.com.

This also converts unnecessary escaped single quotes to raw strings in
the mysql module.
Fix some build errors, catch missed CLI examples
Merge pull request #6778 from terminalmage/docs

Audit module documentation (L to O)