typo in mailmap (#13475)

Author: drammock

.mailmap

@@ -233,7 +233,7 @@ Mathieu Scheltienne <mathieu.scheltienne@gmail.com> Mathieu Scheltienne <7389361
 Mathieu Scheltienne <mathieu.scheltienne@gmail.com> Mathieu Scheltienne <mathieu.scheltienne@fcbg.ch>
 Mathurin Massias <mathurin.massias@gmail.com> mathurinm <mathurin.massias@gmail.com>
 Mathurin Massias <mathurin.massias@gmail.com> mathurinm <mathurinm@users.noreply.github.com>
-Mats van Es <mats.vanes@psych.ox.ac.uk> Mats <mats.vanes@psych.ox.ac.uk
+Mats van Es <mats.vanes@psych.ox.ac.uk> Mats <mats.vanes@psych.ox.ac.uk>
 Matt Sanderson <monkey_man_192@yahoo.com.au> monkeyman192 <monkey_man_192@yahoo.com.au>
 Matteo Anelli <matteo.anelli@aalto.fi> Matteo Anelli <matteanelli.96.11@gmail.com>
 Matteo Visconti di Oleggio Castello <matteo.visconti.gr@dartmouth.edu> Matteo Visconti dOC <matteo.visconti.gr@dartmouth.edu>