Fix whitequark's entry in the mailmap

.mailmap

@@ -206,7 +206,6 @@ Paul Faria <paul_faria@ultimatesoftware.com> Paul Faria <Nashenas88@gmail.com>
 Peer Aramillo Irizar <peer.aramillo.irizar@gmail.com> parir <peer.aramillo.irizar@gmail.com>
 Peter Elmers <peter.elmers@yahoo.com> <peter.elmers@rice.edu>
 Peter Liniker <peter.liniker+github@gmail.com>
-Peter Zotov <whitequark@whitequark.org>
 Phil Dawes <phil@phildawes.net> Phil Dawes <pdawes@drw.com>
 Philipp Brüschweiler <blei42@gmail.com> <blei42@gmail.com>
 Philipp Brüschweiler <blei42@gmail.com> <bruphili@student.ethz.ch>
@@ -257,6 +256,7 @@ Ulrik Sverdrup <bluss@users.noreply.github.com> Ulrik Sverdrup <root@localhost>
 Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
 Vadim Petrochenkov <vadim.petrochenkov@gmail.com> petrochenkov <vadim.petrochenkov@gmail.com>
 Vitali Haravy <HumaneProgrammer@gmail.com> Vitali Haravy <humaneprogrammer@gmail.com>
+whitequark <whitequark@whitequark.org>
 William Ting <io@williamting.com> <william.h.ting@gmail.com>
 Xuefeng Wu <benewu@gmail.com> Xuefeng Wu <xfwu@thoughtworks.com>
 Xuefeng Wu <benewu@gmail.com> XuefengWu <benewu@gmail.com>