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
diff --git a/src/version.c b/src/version.c
index 7d348c4..21aab4f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3473,
+/**/
     3472,
 /**/
     3471,