Minor update to bugs.html

This commit changes inc/md2html.cfg also and it is done to make the
header (under the line 'The International Obfuscated C Code Contest')
match the header in the bugs.md file, in case. Updating bugs.md is not
necessary. A keyword was also added to the html file, mis-features,
along with the already existing misfeatures.

inc/md2html.cfg

@@ -155,11 +155,11 @@ bugs.md
 	-s
 	TITLE=The International Obfuscated C Code Contest
 	-s
-	DESCRIPTION=Bugs and (Mis)features of IOCCC entries
+	DESCRIPTION=Bugs and (mis)features of IOCCC entries
 	-s
-	KEYWORDS=IOCCC, Bugs and (Mis)features, bugs, features, misfeatures
+	KEYWORDS=IOCCC, Bugs and (mis)features, bugs, features, misfeatures, mis-features
 	-s
-	HEADER_2=IOCCC entry Bugs and (Mis)features
+	HEADER_2=IOCCC entry Bugs and (mis)features
 	-D
 	./