(Very small) Tasks inside quote blocks or callouts need some left margin

[richardgaywood]

Tiny nit, but: as show below, at the moment, tasks inside a blockquote are partially clipped by the left margin. Very minor issue but thought I'd mention it.

I only noticed this because I like to have some 'task backlog' type searches tucked away in folded callout blocks. I probably make more use of this than many!

[PipeItToDevNull]

Tweaking embedded things is an absolute nightmare, but one of the core things I wanted to do with the theme. I can't reproduce this with checkboxes, is this an embed of checkboxes or are "tasks" something special from the plugin?