Problem:
Mappings with a control modifier follow the (tag) format of:
{key_before}_CTRL-{key}_{key_after}
Where `{key_before}` and `{key_after}` can be any other key combination.
However, for the Nvim default mappings `[_CTRL-Q`, `]_CTRL-Q`,
`[_CTRL-L`, `]_CTRL-L`, `[_CTRL-T` and `]_CTRL-T`, the underscore
between the bracket and CTRL was absent. This lead to problems finding
the relevant docs with `:help [_CTRL-Q` and made parsing the {subject}
argument for `:help` harder.
Solution:
Use the right tag format.