doc: improve wording of the need for analyze of exp. indexes

This is a followup commit on 3370207986.

Reported-by: Justin Pryzby
Discussion: https://postgr.es/m/20201112211143[email protected]

Backpatch-through: 9.5

diff --git a/doc/src/sgml/ref/create_index.sgml b/doc/src/sgml/ref/create_index.sgml
index fb1ecb9ff6a6cabdd8213c11a0c2846b2ec5e2ff..137e69eed77df2bdc9e8714ade8e6cf28911e971 100644 (file)
--- a/doc/src/sgml/ref/create_index.sgml
+++ b/doc/src/sgml/ref/create_index.sgml
@@ -572,7 +572,7 @@ Indexes:
    For new expression indexes, it is necessary to run <link
    linkend="sql-analyze"><command>ANALYZE</command></link> or wait for
    the <link linkend="autovacuum">autovacuum daemon</link> to analyze
-   the table to generate statistics about new expression indexes.
+   the table to generate statistics for these indexes.
   </para>
 
   <para>