.mailmap: resolve duplicates for Christopher Li

Signed-off-by: Andres Gomez <agomez@igalia.com>
Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <!8837>

.mailmap

@@ -146,6 +146,9 @@ Christoph Haag <haagch@frickel.club> <haagch+mesadev@frickel.club>
 
 Christopher James Halse Rogers <christopher.halse.rogers@canonical.com> Christopher James Halse Rogers <raof@ubuntu.com>
 
+Christopher Li <chrisl@vmware.com> Chris Li <chrisl@vmware.com>
+Christopher Li <chrisl@vmware.com> Qicheng Christopher Li <chrisl@vmware.com>
+
 Claudio Ciccani <klan@directfb.org> <klan@users.sf.net>
 Claudio Ciccani <klan@directfb.org> <klan@users.sourceforge.net>