localedef.1: Minor tweaks to Howard Johnson's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man1/localedef.1

@@ -145,9 +145,14 @@ using
 .SS Other options
 Some of the following options are sensible only for certain operations;
 generally, it should be self-evident which ones.
-Notice that -f and -c
-are reversed from what you might expect, i.e. -f is not the same as
---force.
+Notice that
+.B \-f
+and
+.B \-c
+are reversed from what you might expect; that is,
+.B \-f
+is not the same as
+.BR \-\-force .
 .TP
 .BI \-f " charmapfile" "\fR, \fP\-\-charmap=" charmapfile
 Specify the file that defines the character set