Fix fdo#80445, help pages for VAR functions

VAR.P and VAR.S

Change-Id: I6c7204c425678810b6383c59f3c6d2e791c26977
Reviewed-on: https://gerrit.libreoffice.org/10560
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>
Fix fdo#80452, New CHISQ functions

help entry for CHISQ.DIST, CHISQ.DIST.RT, CHISQ.INV, CHISQ.INV.RT,CHISQ.TEST

Change-Id: I19bc7ed2b50aeb70df8126df7900192e5903e0cb
Reviewed-on: https://gerrit.libreoffice.org/10566
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>