man: Mark debian changelog format in bold

debian/changelog

@@ -2,6 +2,7 @@ dpkg (1.18.5) UNRELEASED; urgency=medium
 
   * Documentation:
     - Say value instead of option in deb-control(5).
+    - Mark debian changelog format in bold in dpkg-parsechangelog(1).
 
  -- Guillem Jover <guillem@debian.org>  Fri, 25 Dec 2015 14:20:16 +0100
 

man/dpkg-parsechangelog.1

@@ -44,7 +44,7 @@ The default is
 .BR \-F " \fIchangelog-format\fP"
 Specifies the format of the changelog. By default the format is read
 from a special line near the bottom of the changelog or failing that
-defaults to the \fIdebian\fP standard format. See also
+defaults to the \fBdebian\fP standard format. See also
 \fBCHANGELOG FORMATS\fP.
 .TP
 .BR \-L " \fIlibdir\fP"
@@ -191,7 +191,7 @@ A changelog parser may not interact with the user at all.
 .SH NOTES
 All \fBParser Options\fP except for \fB\-v\fP are only supported
 since dpkg 1.14.16. Third party parsers for
-changelog formats other than \fIdebian\fP might not support
+changelog formats other than \fBdebian\fP might not support
 all options.
 .PP
 Short option parsing with non-bundled values available only since dpkg 1.18.0.