Bug 15114: Fix typo in opac-suggestion template

Bug 15114: Fix typo in opac-suggestion template

There is a $ in front of the loggedinusername variable, which is
obviously not what is expected here.

It fixes the wrong warning message "You are not authorized to see
pending purchase suggestions." when it should be "There are no pending
purchase suggestions."

Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 621f2ce9ac960d93466c9da5b4c6559e71519e3d)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>