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/testdir/test49.vim b/src/testdir/test49.vim
index e763c6f..f50062e 100644
--- a/src/testdir/test49.vim
+++ b/src/testdir/test49.vim
@@ -608,7 +608,7 @@
 " END_OF_TEST_ENVIRONMENT - do not change or remove this line.
 
 
-" Tests 1 to 15 were moved to test_viml.vim
+" Tests 1 to 15 were moved to test_vimscript.vim
 let Xtest = 16
 
 "-------------------------------------------------------------------------------