Fix two more entries in the mailmap

Happened to spot these due to recent correspondence.

.mailmap

@@ -37,6 +37,7 @@ Huiliang Liu <huliu@pivotal.io> huiliang-liu <34437843+huiliang-liu@users.norepl
 Jason Vigil <jvigil@pivotal.io> <37551591+jvigil-pivotal@users.noreply.github.com>
 Jasper Li <jasli@pivotal.io> Jasper <jasli@pivotal.io>
 Jasper Li <jasli@pivotal.io> <lij55@users.noreply.github.com>
+Jialun Du <jdu@pivotal.io> Jialun <jdu@pivotal.io>
 Jignesh Patel <jmp_007@hotmail.com> <pateljm@users.noreply.github.com>
 Jimmy Yih <jyih@pivotal.io> jimmyyih <jyih@pivotal.io>
 Joao Pereira <jdealmeidapereira@pivotal.io> <joaopapereira@gmail.com>
@@ -71,6 +72,7 @@ Shreedhar Hardikar <shardikar@pivotal.io> <hardikar@users.noreply.github.com>
 Shujie Zhang <shzhang@pivotal.io> Zhang Shujie <35027678+zhangjackey@users.noreply.github.com>
 Shujie Zhang <shzhang@pivotal.io> ZhangJackey <35027678+zhangjackey@users.noreply.github.com>
 Stephen Wu <stwu@pivotal.io> <shwu@users.noreply.github.com>
+Tingfang Bao <bbao@pivotal.io> Bob Bao <bbao@pivotal.io>
 Trevor Yacovone <tyacovone@pivotal.io> <38438025+tyacovone@users.noreply.github.com>
 Venkatesh Raghavan <vraghavan@pivotal.io> Venkatesh (Venky) Raghavan <vraghavan@pivotal.io>
 Venkatesh Raghavan <vraghavan@pivotal.io> <vraghavan78@users.noreply.github.com>