man: Mark dselect(1) color attributes in bold

debian/changelog

@@ -123,6 +123,7 @@ dpkg (1.18.0) UNRELEASED; urgency=low
     - Mark field names in bold in man pages.
     - Use various groff escape sequences for quoting characters.
     - Lowercase warning and note admonitions in start-stop-daemon(8).
+    - Mark dselect(1) color attributes in bold.
   * Output message fixes and improvements:
     - Remove trailing newline from string literal in warning calls.
     - Say “execute” instead of “exec” in Dpkg::Changelog::Parse error message.

man/dselect.1

@@ -131,7 +131,8 @@ Optionally, after the color specification is another colon, and an
 attribute specification. This is a list of one or more attributes,
 separated by plus (\(oq+\(cq) characters.
 Available attributes include (not all of these will work on all terminals):
-normal, standout, underline, reverse, blink, bright, dim, bold
+.BR normal ", " standout ", " underline ", " reverse ", " blink ", "
+.BR bright ", " dim ", " bold
 .TP
 .BR \-? ", " \-\-help
 Print a brief help text and exit successfully.