Fix translation issues

Fix translation issues

1.
 <failure message="msgfmt
 failure">misc/translator/po/fr-CA-staff-prog.po:713: number of format
 specifications in 'msgid' and 'msgstr' does not match

2.
 <failure message="msgfmt
 failure">misc/translator/po/hy-Armn-staff-prog.po:53901: 'msgstr' is
 not a valid C format string, unlike 'msgid'. Reason: The character
 that terminates the directive number 1 is not a v
 alid conversion specifier.

Found with:
 sudo apt-get install translate-toolkit
 junitmsgfmt misc/translator/po/ar-Arab-staff-prog.po

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>