help: Fix a misleading sentence that suggesting press the File Option button.

4 jobs for help-opening in 4 minutes and 52 seconds (queued for 1 second)
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passed #1184739
flatpak
flatpak

00:04:52

manual #1184736
allowed to fail manual
master
passed #1184737
meson

00:01:21

manual #1184738
allowed to fail manual
meson-gtk-doc