docs: updates to use man(7) macros to fix formatting

docs/fop.1

@@ -3,58 +3,58 @@
 .\"
 .\" This work is licensed under CC BY-SA 4.0. To see a copy of this license,
 .\" visit <http://creativecommons.org/licenses/by-sa/4.0/>.
-
+.\"
 .TH fop 1
-
 .SH NAME
-
 fop \(en field operator
-
+.\"
 .SH SYNOPSIS
-
+.\"
 fop
 .RB ( -d )
 .RB [ delimiter ]
 .RB index 
 .RB program...
-
+.\"
 .SH DESCRIPTION
-
+.\"
 Performs operations on specified fields in input data.
-
+.\"
 .SH OPTIONS
-
-.B -d
-.RS
+.\"
+.IP \fB-d\fP
 Sets a delimiter by which the input data will be split into fields. The default
 is an ASCII record separator (␞).
-.RE
-
 .SH STANDARD INPUT
-
+.\"
 Data will be read from the standard input.
-
+.\"
 .SH CAVEATS
-
+.\"
 Field indices are zero-indexed, which may be unexpected behavior for some users.
-
+.\"
 .SH RATIONALE
-
+.\"
 With the assumption that tools will output data separated with ASCII field
-separators, there is 
+separators, there is a need for the ability to modify select fields in this data
+easily and quickly.
 
-The idea for this utility originated in the fact that GNU ls(1) utility contains
-a
+The idea for this utility originated in the fact that the GNU
+.BR ls (1)
+utility contains a
 .B -h
 option which enables human-readable units in file size outputs. This
-functionality was broken out into hru(1), but there was no easy way to modify
-the field in the ouput of ls(1p) without a new tool.
-
+functionality was broken out into
+.BR hru (1),
+but there was no easy way to modify the field in the ouput of
+.BR ls (1p)
+without creating a new tool.
+.\"
 .SH COPYRIGHT
-
-Copyright © 2024 Emma Tebibyte. License AGPLv3+: GNU AGPL version 3 or later
+.\"
+Copyright \(co 2024 Emma Tebibyte. License AGPLv3+: GNU AGPL version 3 or later
 <https://gnu.org/licenses/agpl.html>.
-
+.\"
 .SH SEE ALSO
-
-sed(1p)
+.\"
+.BR sed (1p)