gnucash maint: Use "help:" instead of "ghelp:" to display our documentation on linux

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/ad969998 (commit)
	from  https://github.com/Gnucash/gnucash/commit/c81aeddd (commit)



commit ad969998006d6459fce1c537a853a6850c92df9c
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Sun Sep 26 22:52:34 2021 +0200

    Use "help:" instead of "ghelp:" to display our documentation on linux
    
    This comes with a few nice side effects:
    * "help:" no longer needs the workaround to link directly to an anchor.
    " "help:" requires the document's book id to be "index". We used to have
    "index" for guide and "help" for manual. The forced alignment also
    allows us to simplify the way MacOS invokes guide an manual.



Summary of changes:
 gnucash/gnome-utils/gnc-gnome-utils.c | 73 ++---------------------------------
 1 file changed, 4 insertions(+), 69 deletions(-)