Update D* handlers to use new send

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 61.29032% with 24 lines in your changes are missing coverage. Please review.

Project coverage is 74.29%. Comparing base (eadf5a7) to head (f3401ba).

Files	Patch %	Lines
handlers/dialog360/handler.go	71.42%	8 Missing and 2 partials :warning:
handlers/dart/handler.go	33.33%	3 Missing and 3 partials :warning:
handlers/dmark/handler.go	50.00%	3 Missing and 2 partials :warning:
handlers/discord/handler.go	62.50%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #703 +/- ## ========================================== + Coverage 74.20% 74.29% +0.09% ========================================== Files 98 98 Lines 12922 12890 -32 ========================================== - Hits 9589 9577 -12 + Misses 2632 2611 -21 - Partials 701 702 +1 ```

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