patch 8.2.1520: Vim9: CTRL-] used in :def function does not work

Problem:    Vim9: CTRL-] used in :def function does not work.
Solution:   Omit count or prepend colon. (closes #6769)
diff --git a/src/version.c b/src/version.c
index 421e4a6..41e9188 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1520,
+/**/
     1519,
 /**/
     1518,