[groff] 09/25: docs: (Font description files) Fix style nits.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit ca32e5364ed721a452fa5e0087ae2f1331cb355c
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Tue Mar 29 00:12:38 2022 +1100

    docs: (Font description files) Fix style nits.
    
    * Consistently use a thousands separator.
    * Clarify: the space width is a property of a font (only)--not the
      device.
---
 doc/groff.texi       |  6 +++---
 man/groff_font.5.man | 10 +++++-----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/doc/groff.texi b/doc/groff.texi
index 581a4e01..b816d814 100644
--- a/doc/groff.texi
+++ b/doc/groff.texi
@@ -18637,9 +18637,9 @@ relative to that basis.  The ``unit width'' is the 
number of basic units
 per point when the font is rendered at this nominal size.
 
 For instance, @code{groff}'s @code{lbp} device uses a @code{unitwidth}
-of@tie{}800.  In its Times roman font @samp{TR}, its @code{spacewidth}
-is@tie{}833; this is also the width of its comma, period, centered
-period, and mathematical asterisk, while its @samp{M} is 2963 basic
+of@tie{}800.  Its Times roman font @samp{TR} has a @code{spacewidth}
+of@tie{}833; this is also the width of its comma, period, centered
+period, and mathematical asterisk, while its @samp{M} is 2,963 basic
 units.  Thus, an @samp{M} on the @code{lbp} device is 2,963 basic units
 wide at a notional type size of 800@tie{}points.@footnote{800-point type
 is not practical for most purposes, but using it enables the quantities
diff --git a/man/groff_font.5.man b/man/groff_font.5.man
index 3ff31f52..5640de49 100644
--- a/man/groff_font.5.man
+++ b/man/groff_font.5.man
@@ -542,16 +542,16 @@ device uses a
 .B unitwidth
 of\~800.
 .
-In its Times roman font
-.RB (\[lq] TR \[rq]),
-its
+Its Times roman font
+.RB (\[lq] TR \[rq])
+has a
 .B spacewidth
-is\~833;
+of\~833;
 this is also the width of its comma,
 period,
 centered period,
 and mathematical asterisk,
-while its \[lq]M\[rq] is 2963 basic units.
+while its \[lq]M\[rq] is 2,963 basic units.
 .
 Thus,
 an \[lq]M\[rq] on the