configure: fix a typo that could break voice builds

(If you don't have espeak, festival, or flite installed)

Change-Id: I5820535c55cc02e32bf31f3e30070b2c1e68ff87
This commit is contained in:
Solomon Peachy 2021-07-09 11:08:30 -04:00
parent 8de163b8ae
commit 663539619c