patch 8.2.3576: some functions are not documented for use with a method

Problem:    Some functions are not documented for use with a method.
Solution:   Add examples.  Fix that sign_unplacelist() only takes one
            argument. (Sean Dewar, closes #9081)
diff --git a/src/version.c b/src/version.c
index 27331c9..c8ea131 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3576,
+/**/
     3575,
 /**/
     3574,