Some frames in templates were horizontal-align to left,
which prevent from centering text

Change-Id: I1de654af6ebfcad52352ed9031d14da00d72eff5
Reviewed-on: https://gerrit.libreoffice.org/67790
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
(cherry picked from commit 802e77dd)
Reviewed-on: https://gerrit.libreoffice.org/67933