Bug 28834: Correct wording biblios/authorities in tools home

Bug 28834: Correct wording biblios/authorities in tools home

In tools home, we actually see 2 wordings : biblios/bibliographic authorities/authority
Looks like bibliographic is more correct.

Test plan :
1) Apply patch and look at words in tools home /cgi-bin/koha/tools/tools-home.pl

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>