patch 8.2.3473: some files with tcl syntax are not recognized

Problem:    Some files with tcl syntax are not recognized.
Solution:   Add a few file patterns. (Doug Kearns

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3473,
 /**/
     3472,
 /**/