patch 9.1.0492: filetype: Vim-script files not detected by shebang line

Problem:  Vim-script files may not be recognised
Solution: Add shebang line detection (Doug Kearns)

closes: #15012

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

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    492,
 /**/
     491,
 /**/