Page text area top --> Above page text area
Page text area bottom --> Below page text area
Change-Id: I3a63ec09e6a3dfbd51385139ea89454bd1792a8f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133288
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>