fix bad pattern for test match

Author: ssadedin

tests/multiext/run.sh

@@ -2,7 +2,7 @@ source ../testsupport.sh
 
 run
 
-grep -q 'foo.vcf.gz .* foo.vcf.world.txt' test.out || err "Selected wrong output from produce when only partial suffix matches"
+grep -q 'foo.vcf.gz.*foo.vcf.world.txt' test.out || err "Selected wrong output from produce when only partial suffix matches"
 
 exists foo.vcf.world.txt