Add another link of a GUC variable to where it is explained.

diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml
index 2110e2d305a5c7fecfda4ac5c5c39325e9ac7f4d..019d3f2c5712173b89091e7461a1635ae63d4eff 100644 (file)
--- a/doc/src/sgml/maintenance.sgml
+++ b/doc/src/sgml/maintenance.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Routine Database Maintenance Tasks
@@ -603,7 +603,7 @@ HINT:  Stop the postmaster and use a standalone backend to VACUUM in "mydb".
 
    
     Tables whose relfrozenxid value is more than
-    <varname>autovacuum_freeze_max_age> transactions old are always
+    <xref linkend="guc-autovacuum-freeze-max-age"> transactions old are always
     vacuumed (this also applies to those tables whose freeze max age has
     been modified via storage parameters; see below).  Otherwise, if the
     number of tuples obsoleted since the last