Fix warnings from groff -mandoc -t -K utf8 -rF0 -rHY=0 -ww -b -z

Specify list offset and width in ens where applicable.
Shorten the ttyname description in sudo_logsrv.proto.mdoc.in.
Bug #1075.

Author: millert

docs/sudo.mdoc.in

@@ -324,7 +324,7 @@ In lieu of a path name, the string "sudoedit" is used when consulting
 the security policy.
 If the user is authorized by the policy, the following steps are
 taken:
-.Bl -enum -offset 4
+.Bl -enum -offset 4n
 .It
 Temporary copies are made of the files to be edited with the owner
 set to the invoking user.

docs/sudo_logsrv.proto.mdoc.in

@@ -646,7 +646,7 @@ entries are recognized, but not required:
 .It submitgroup Ta string Ta submitting user's primary group name
 .It submitgroups Ta StringList Ta submit user's supplementary group names
 .It submituid Ta int64 Ta submit user's user-ID
-.It ttyname Ta string Ta the terminal the command was submitted from
+.It ttyname Ta string Ta terminal the command was submitted from
 .El
 .Pp
 The server must accept other variables not listed above but may

docs/sudoers.mdoc.in

@@ -5775,7 +5775,7 @@ locale.
 If the user is not allowed to run the command, the reason for the denial
 will follow the user name.
 Possible reasons include:
-.Bl -tag -width 4
+.Bl -tag -width 4n
 .It user NOT in sudoers
 The user is not listed in the
 .Em sudoers
@@ -5809,7 +5809,7 @@ If an error occurs,
 will log a message and, in most cases, send a message to the
 administrator via email.
 Possible errors include:
-.Bl -tag -width 4
+.Bl -tag -width 4n
 .It parse error in @sysconfdir@/sudoers near line N
 .Nm
 encountered an error when parsing the specified file.