Doc: fix typo in pgbench random_zipfian() documentation.

Per bug #15819 from Koizumi Satoru.

Discussion: https://postgr.es/m/15819-e6191bef1f7334c0@postgresql.org

diff --git a/doc/src/sgml/ref/pgbench.sgml b/doc/src/sgml/ref/pgbench.sgml
index ef22a484e71a72c8da6c658e8b423a584f12d9ed..e3b73a4cf51d73a8cd0202532b44e0050a727b6c 100644 (file)
--- a/doc/src/sgml/ref/pgbench.sgml
+++ b/doc/src/sgml/ref/pgbench.sgml
@@ -1561,7 +1561,7 @@ f(x) = PHI(2.0 * parameter * (x - mu) / (max - min + 1)) /
       For example, random_zipfian(1, ..., 2.5) produces
       the value 1 about (2/1)**2.5 =
       5.66 times more frequently than 2, which
-      itself is produced (3/2)*2.5 = 2.76 times more
+      itself is produced (3/2)**2.5 = 2.76 times more
       frequently than 3, and so on.