Suggestion underline hats are off by a few characters

[drahnr]

Most of the time it's accurate, sometimes it is not:

error: spellcheck(Hunspell)
   --> /media/supersonic1t/projects/cargo-spellcheck/src/suggestion.rs:58
    |
 58 |  The span (absolute!) of where it is supposed to be used. TODO make this relative towards the literal.
    |                                                               ^^^^
    | - TOO, DODO, TO DO, TO-DO, TOD, TOTO, TODD, or one of 3 others
    |
    |   Possible spelling mistake found.

error: spellcheck(Hunspell)
    --> /media/supersonic1t/projects/cargo-spellcheck/src/literalset.rs:293
     |
 293 |  Convert a range of the linear trimmed (but no other processing) string represnetation to a set of
     |                                                                             ^^^^^^^^^^^^^^
     | - representation, reinterpretation, presentation, representative, or interpretation
     |
     |   Possible spelling mistake found.
     |

[drahnr]

The latter case is tracked as #5