runtime(vim): Sync syntax generator base file with output file.

Synchronisation was lost in commit 0fab891 and the error propagated to
the output file in commit 5606ca5.

closes: #16889

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index d469134..fbfc8ad 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -1153,7 +1153,7 @@
 syn keyword	vimSyncClear	contained	clear	skipwhite	nextgroup=vimSyncGroupName
 syn keyword	vimSyncFromstart	contained	fromstart
 syn keyword	vimSyncMatch	contained	match	skipwhite	nextgroup=vimSyncGroupName
-syn keyword	vimSyncRegion	contained	region	skipwhite	nextgroup=vimSynReg
+syn keyword	vimSyncRegion	contained	region	skipwhite	nextgroup=vimSynRegion
 syn match	vimSyncLinebreak	contained	"\<linebreaks="		nextgroup=vimNumber
 syn keyword	vimSyncLinecont	contained	linecont	skipwhite	nextgroup=vimSynRegPat
 syn match	vimSyncLines	contained	"\<lines="		nextgroup=vimNumber