patch 8.2.0081: MS-Windows also need the change to support INIT4()

Problem:    MS-Windows also need the change to support INIT4().
Solution:   Add the ctags arguments. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index 626c382..cff754f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    81,
+/**/
     80,
 /**/
     79,