Add missing documention connecting word.

diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index 0fbf1225aa5ed02397eda1fffe8df57bc049cdc1..2a1c2939e23a025384fb0185f18f51cb8f0250a0 100644 (file)
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -401,7 +401,7 @@ tar -cf backup.tar /usr/local/pgsql/data
   <para>
    If simultaneous snapshots are not possible, one option is to shut down
    the database server long enough to establish all the frozen snapshots.
-   Another option is perform a continuous archiving base backup (<xref
+   Another option is to perform a continuous archiving base backup (<xref
    linkend="backup-base-backup">) because such backups are immune to file
    system changes during the backup.  This requires enabling continuous
    archiving just during the backup process; restore is done using