Bug 10156 - Fix usr/bin/perl path for get_report_social_data.pl

Currently, the perl path for get_report_social_data.pl is "#!/bin/perl"
when it should be "#!/usr/bin/perl".

While I'm not entirely sure how to test this, rangi did mention:

23:47 (it wouldnt work on my debian install)
23:48  zsh: no such file or directory: /bin/perl

It's a pretty trivial change, so I'm not sure it needs much of a test
plan.

Signed-off-by: Magnus Enger <magnus@enger.priv.no>
Before the patch "grep -r '#!/bin/perl' in the misc dir shows one file
with this line, and it is indeed get_report_social_data.pl. After the
patch there are no occurrences left.
Passed-QA-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit 2e103a018cedc1c57d1c0db8acad6f93ab4ca428)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit 36e06a151c718d7d905e4cb0b8d818c0b12f3b4d)

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>