patch 8.0.0360: sometimes VimL is used instead of "Vim script"

Problem:    Sometimes VimL is used, which is confusing.
Solution:   Consistently use "Vim script". (Hirohito Higashi)
diff --git a/src/Makefile b/src/Makefile
index 6de64c0..bcfb8cd 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2213,7 +2213,7 @@
 	test_usercommands \
 	test_utf8 \
 	test_viminfo \
-	test_viml \
+	test_vimscript \
 	test_visual \
 	test_window_cmd \
 	test_window_id \