doc: Remove trailing whitespace in xref

Remove stray whitespace in xref tag.

This was found due to a regression in xmllint 2.15.0 which flagged
this as an error, and at the time of this commit no fix for xmllint
has shipped.

Author: Erik Wienhold <[email protected]>
Discussion: https://postgr.es/m/f4c4661b-4e60-4c10-9336-768b7b55c084@ewie.name
Backpatch-through: 17

diff --git a/doc/src/sgml/ref/pg_combinebackup.sgml b/doc/src/sgml/ref/pg_combinebackup.sgml
index 091982f62ad56cec79f43ac75e4352ab7a146953..1da60e03c8686593eb85dba85eedb610bb6b5ff4 100644 (file)
--- a/doc/src/sgml/ref/pg_combinebackup.sgml
+++ b/doc/src/sgml/ref/pg_combinebackup.sgml
@@ -284,7 +284,7 @@ PostgreSQL documentation
 
   <para>
    To avoid this problem, taking a new full backup after changing the checksum
-   state of the cluster using <xref linkend="app-pgchecksums "/> is
+   state of the cluster using <xref linkend="app-pgchecksums"/> is
    recommended. Otherwise, you can disable and then optionally reenable
    checksums on the directory produced by <literal>pg_combinebackup</literal>
    in order to correct the problem.