patch 8.2.1915: Vim9: error for wrong number of arguments is not useful

Problem:    Vim9: error for wrong number of arguments is not useful.
Solution:   Mention whatever we have for the name. (closes #7208)
diff --git a/src/version.c b/src/version.c
index ad74098..e2a588c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1915,
+/**/
     1914,
 /**/
     1913,