gnucash-docs maint: Fix path for ume-xxx.ttf so dist works.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/cb78d7dd (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/06ca2f3f (commit)



commit cb78d7dded28c0772074b2dac54d141bf66af1b7
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 29 14:25:20 2019 -0700

    Fix path for ume-xxx.ttf so dist works.



Summary of changes:
 Makefile.am | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)