doc: fix wording for plpgsql, add "and"

Reported-by: Anthony Greene
Discussion: https://postgr.es/m/CAPRNmnsSZ4QL75FUjcS8ND_oV+WjgyPbZ4ch2RUwmW6PWzF38w@mail.gmail.com

Backpatch-through: 9.4

diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index 6c5488d0f766435c4d88d6013548ee5f73d7dcc8..b4ebb5a0c98456f727d648c73840be33418b02cd 100644 (file)
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -5130,7 +5130,7 @@ CREATE FUNCTION
   <para>
    <application>PL/pgSQL</application> is similar to PL/SQL in many
    aspects. It is a block-structured, imperative language, and all
-   variables have to be declared.  Assignments, loops, conditionals
+   variables have to be declared.  Assignments, loops, and conditionals
    are similar.  The main differences you should keep in mind when
    porting from <application>PL/SQL</application> to
    <application>PL/pgSQL</application> are: