These sound weird since markup was added in 6a5bde7d4:
https://www.postgresql.org/docs/devel/release-14.html
| Remove server and Chapter 34 support for the version 2 wire protocol (Heikki Linnakangas)
...
| Pass doubled quote marks in Chapter 36 SQL command strings literally (Tom Lane)
-Remove server and libpq support for the version 2 wire protocol (Heikki Linnakangas)
+Remove server and <xref linkend="libpq"/> support for the version 2 <link linkend="protocol">wire protocol</link>
(HeikkiLinnakangas)
> Force custom server variable names to match the pattern used for unquoted SQL identifiers (Tom Lane)
Say "Require" not force?
> This setting was disabled in PostgreSQL version 13.3.
"disabled" sounds like it was set to "off". Maybe say it was ignored.
> Add long-running queries to be canceled if the client disconnects (Sergey Cherkashin, Thomas Munro)
Should say: Allow
> The server variable client_connection_check_interval allows supporting operating systems, e.g., Linux, to
automaticallycancel queries by disconnected clients.
say "some operating systems" ?
> This can be disabled by turning client option "sslsni" off.
"turning off"
| Add %P to log_line_prefix to report the parallel group leader (Justin Pryzby)
Maybe it should say "Allow %P in log_line_prefix to ...", otherwise it sounds
like the default was changed.
| Reduce the default value of vacuum_cost_page_miss (Peter Geoghegan)
| This new default better reflects current hardware capabilities.
Also say: the previous default was 10.