patch 8.2.3643: header for source file is outdated

Problem:    Header for source file is outdated.
Solution:   Make the header more accurate. (closes #9186)
diff --git a/src/version.c b/src/version.c
index f75c08b..cf05293 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3643,
+/**/
     3642,
 /**/
     3641,