Resolves: fdo#72280 Wrong title for Analysis of Variance (ANOVA) dialog

Change-Id: Ie2e1edee804f3e85eab08d05adecfc25ebbc77c1
Reviewed-on: https://gerrit.libreoffice.org/6934
Reviewed-by: Joren De Cuyper <jorendc@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>