Small wording tweaks

Dmitry Igrishin

doc/src/sgml/catalogs.sgml

@@ -8496,7 +8496,7 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
       <entry><type>boolean</type></entry>
       <entry>
        <literal>true</literal> if the prepared statement was created
-       via the <command>PREPARE</command> SQL statement;
+       via the <command>PREPARE</command> SQL command;
        <literal>false</literal> if the statement was prepared via the
        frontend/backend protocol
       </entry>

src/interfaces/libpq/fe-protocol3.c

@@ -163,7 +163,7 @@ pqParseInput3(PGconn *conn)
 
 			/*
 			 * Unexpected message in IDLE state; need to recover somehow.
-			 * ERROR messages are displayed using the notice processor;
+			 * ERROR messages are handled using the notice processor;
 			 * ParameterStatus is handled normally; anything else is just
 			 * dropped on the floor after displaying a suitable warning
 			 * notice.  (An ERROR is very possibly the backend telling us why