Sync target escaping with `mdit-py-plugins` > 0.2.8

[hukkin]

Description / Summary

MyST parser will no longer use a regex to find targets in the future. Sync target escaping with the changes in executablebooks/mdit-py-plugins#31

Value / benefit

.

Implementation details

No response

Tasks to complete

No response

[hukkin]

The role name pattern will change as well it seems executablebooks/mdit-py-plugins#32. mdformat-myst should adapt.