mailmap: fix up some identities.

Author: wanda-phi

.mailmap

@@ -1,6 +1,6 @@
-Marcelina Kościelnicka <mwk@0x04.net>
-Marcelina Kościelnicka <mwk@0x04.net> <koriakin@0x04.net>
-Marcelina Kościelnicka <mwk@0x04.net> <marcin@symbioticeda.com>
+Wanda Phinode <wanda@phinode.net> <mwk@0x04.net>
+Wanda Phinode <wanda@phinode.net> <koriakin@0x04.net>
+Wanda Phinode <wanda@phinode.net> <marcin@symbioticeda.com>
 Claire Xenia Wolf <claire@yosyshq.com> <claire@clairexen.net>
 Claire Xenia Wolf <claire@yosyshq.com> <claire@symbioticeda.com>
 Claire Xenia Wolf <claire@yosyshq.com> <clifford@symbioticeda.com>