mailmap: Add entry for Shlok Patel.
mailmap: Add entry for Shlok Patel.

Guessing with the name that looks like a full name, rather than
a username; which is also the form they've used more often.

rht/zulip,rht/zulip,andersk/zulip,zulip/zulip,kou/zulip,rht/zulip,rht/zulip,andersk/zulip,zulip/zulip,kou/zulip,zulip/zulip,andersk/zulip,andersk/zulip,andersk/zulip,zulip/zulip,andersk/zulip,rht/zulip,kou/zulip,kou/zulip,rht/zulip,zulip/zulip,andersk/zulip,zulip/zulip,kou/zulip,zulip/zulip,rht/zulip,kou/zulip,kou/zulip