Maybe the node type 'comment' is not the best name,
but it was intended to allow using the default function
to be able to move with 'M-C-f' in the comments and strings
there tree-sitter has no information.

It makes sense to support the default movement with 'M-C-f'
in the comments and strings of all ts modes.  The second patch
shows how this could be achieved by adding the default
'comment' match to 'treesit-thing-settings' of all modes.
Or maybe this should be customizable?