Meta: Fix my .mailmap entry by adding the name

Author: davidot

.mailmap

@@ -5,7 +5,7 @@ Brian Gianforcaro <bgianf@serenityos.org> <b.gianfo@gmail.com>
 Max Wipfli <max.wipfli@serenityos.org> <mail@maxwipfli.ch>
 Sam Atkins <atkinssj@serenityos.org> <atkinssj@gmail.com>
 Karol Kosek <krkk@serenityos.org> <krkk@krkk.ct8.pl>
-David Tuin <davidot@serenityos.org> <david.tuin@gmail.com>
+davidot <davidot@serenityos.org> <david.tuin@gmail.com>
 Tobias Christiansen <tobyase@serenityos.org> <tobi@tobyase.de>
 kleines Filmröllchen <filmroellchen@serenityos.org> <malu.bertsch@gmail.com>
 Lenny Maiorani <lenny@serenityos.org> <lenny@colorado.edu>