patch 8.2.3684: blockwise insert does not handle autoindent properly

Problem:    Blockwise insert does not handle autoindent properly.
Solution:   Adjust text column for indent. (closes #9229)
diff --git a/src/version.c b/src/version.c
index 7361d90..35afaed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3684,
+/**/
     3683,
 /**/
     3682,