gnucash-docs maint: Fix indentation of EXTRA_DIST even more

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/5777d258 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/e127ef2b (commit)



commit 5777d258b27a9a5a2e9c23b886728fbe527e3f8d
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Tue Sep 10 09:37:48 2019 +0200

    Fix indentation of EXTRA_DIST even more



Summary of changes:
 Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)