runtime(vim): Update base-syntax, improve :map highlighting

Match :map ( RHS properly.

Only match ! after :map, :noremap, :unmap and :mapclear.

closes: #15297

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/syntax/testdir/input/vim_ex_match.vim

@@ -11,3 +11,22 @@ match none
 3match FooGroup /Foo/
 3match
 3match none
+
+
+" Differentiate map() from :map
+
+call match(haystack, 'needle')
+call match (haystack, 'needle')
+
+function Foo()
+  match FooGroup /Foo/
+  call match(haystack, 'needle')
+  call match (haystack, 'needle')
+endfunction
+
+def Foo()
+  match FooGroup /Foo/
+  match(haystack, 'needle')
+  # Error: bad :match command - trailing characters
+  match (haystack, 'needle')
+enddef