Changes to msort.1

- Clarify that its the message names, not the messages,
  that get printed
- passed -> specified
- Merge 3rd sentence in DESCRIPTION with 1st
- 'the' standard input

Closes: #66 [via git-merge-pr]

man/msort.1

@@ -11,19 +11,17 @@
 .Op Ar msgs\ ...
 .Sh DESCRIPTION
 .Nm
-sorts mail messages according to various orders.
+sorts mail messages according to various orders,
+and prints, one per line, the sorted message names.
 See
 .Xr mmsg 7
 for the message argument syntax.
 .Pp
-If no messages are passed,
+If no messages are specified,
 .Nm
-will read filenames from standard input,
+will read filenames from the standard input,
 or use the default sequence if used interactively.
 .Pp
-.Nm
-prints the sorted messages line by line.
-.Pp
 The options are as follows:
 .Bl -tag -width Ds
 .It Fl r