patch 8.2.3992: wrong local-additions in the help with language mix

Problem:    Wrong local-additions in the help with language mix.
Solution:   Adjust how the local additions list is generated. (Hirohito
            Higashi, closes #9464)
diff --git a/src/version.c b/src/version.c
index 96864ef..7ec033c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3992,
+/**/
     3991,
 /**/
     3990,