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/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 7aaea9d..9ef8d61 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -3327,8 +3327,8 @@
    g:vimsyn_folding =~ 't' : fold tcl      script
 <
 							*g:vimsyn_noerror*
-Not all error highlighting that syntax/vim.vim does may be correct; VimL is a
-difficult language to highlight correctly.  A way to suppress error
+Not all error highlighting that syntax/vim.vim does may be correct; Vim script
+is a difficult language to highlight correctly.  A way to suppress error
 highlighting is to put the following line in your |vimrc|: >
 
 	let g:vimsyn_noerror = 1