Use the Oxford comma consistently, it is helpful in technical documents.

docs/sudo_plugin_python.mdoc.in

@@ -2,6 +2,7 @@
 .\" SPDX-License-Identifier: ISC
 .\"
 .\" Copyright (c) 2019-2021 Robert Manner <robert.manner@oneidentity.com>
+.\" Copyright (c) 2019-2022 Todd C. Miller <Todd.Miller@sudo.ws>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
@@ -15,7 +16,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd September 17, 2021
+.Dd January 19, 2022
 .Dt SUDO_PLUGIN_PYTHON @mansectform@
 .Os Sudo @PACKAGE_VERSION@
 .Sh NAME
@@ -86,7 +87,7 @@ The actual methods required depent on the type of the plugin,
 but most return an
 .Dq int
 result code, as documented in
-.Xr sudo_plugin @mansctsu@ ,
+.Xr sudo_plugin @mansectsu@ ,
 that indicates whether or not the method was successful.
 The Python sudo module defines the following constants to improve readability:
 .Bl -column "sudo.RC.USAGE_ERROR" "XXX" -offset 4n
@@ -280,7 +281,7 @@ strings.
 .Pp
 To accept a command, at the very minimum the plugin must set in the
 .Em command ,
-.Em runas_uid
+.Em runas_uid ,
 and
 .Em runas_gid
 keys.
@@ -581,7 +582,7 @@ log_stderr(self, buf: str) -> int
 .Ed
 .Pp
 Receive the user input or output of the terminal device and
-application standard input / output / error.
+application standard input, standard output, or standard error.
 See the matching calls in
 .Xr sudo_plugin @mansectform@ .
 .Pp
@@ -817,7 +818,7 @@ front-end.
 .It plugin_type
 The type of plugin that accepted the command, currently either
 .Dv sudo.PLUGIN_TYPE.POLICY ,
-.Dv sudo.PLUGIN_TYPE.APPROVAL
+.Dv sudo.PLUGIN_TYPE.APPROVAL ,
 or
 .Dv sudo.PLUGIN_TYPE.SUDO .
 The
@@ -866,7 +867,7 @@ The name of the plugin that rejected the command.
 .It plugin_type
 The type of plugin that rejected the command, currently either
 .Dv sudo.PLUGIN_TYPE.POLICY ,
-.Dv sudo.PLUGIN_TYPE.APPROVAL
+.Dv sudo.PLUGIN_TYPE.APPROVAL ,
 or
 .Dv sudo.PLUGIN_TYPE.IO .
 .Pp