settings: Fix "for" attribute of label in admin_human_form.hbs.
settings: Fix "for" attribute of label in admin_human_form.hbs.

The "for" attribute of label of full-name input in
admin_human_form.hbs was set to "full_name" which is already the
ID of full name input in profile section and not the input in
this form.

As a result, the modal was being closed on clicking on that
label. This commit for now just updates the "for" attribute
for full-name input to the correct ID.

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