doc: Change statistics function xref to the right target

Commit 7d3b7011b added a link to the statistics functions, which at the
time were anchored under the section for statistics views.  aebe989477a
added a separate section for statistics functions, but the link was not
updated to point to the new anchor.  Fix by changing the xref.

Backpatch to all supported branches.

Author: Peter Smith 
Discussion: https://postgr.es/m/CAHut+Ptr0jKzNNtWnssLq+3jNhbyaBseqf6NPrWHk08mQFRoTg@mail.gmail.com
Backpatch-through: 11

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 24ad87f9109c6ca190878661a34d580db0544a83..f1ad64c3d699451635fa74a33699e7c4d3d06a83 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -22851,7 +22851,7 @@ SELECT * FROM pg_ls_dir('.') WITH ORDINALITY AS t(ls,n);
   
    In addition to the functions listed in this section, there are a number of
    functions related to the statistics system that also provide system
-   information. See views"/> for more
+   information. See functions"/> for more
    information.