patch 8.2.2128: there is no way to do something on CTRL-Z

Problem:    There is no way to do something on CTRL-Z.
Solution:   Add VimSuspend and VimResume autocommand events. (closes #7450)
diff --git a/src/normal.c b/src/normal.c
index da0ffc1..8dca538 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -5787,7 +5787,7 @@
     clearop(cap->oap);
     if (VIsual_active)
 	end_visual_mode();		// stop Visual mode
-    do_cmdline_cmd((char_u *)"st");
+    do_cmdline_cmd((char_u *)"stop");
 }
 
 /*