s/scenario-groups/scenario_groups/g

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>
diff --git a/scenario_groups/Makefile b/scenario_groups/Makefile
index 0b7bb8a..66fdc80 100644
--- a/scenario_groups/Makefile
+++ b/scenario_groups/Makefile
@@ -24,7 +24,7 @@
 
 include $(top_srcdir)/include/mk/env_pre.mk
 
-INSTALL_DIR		:= scenario-groups
+INSTALL_DIR		:= scenario_groups
 
 # Don't copy over the Makefile
 UNWANTED_FILES		:= Makefile