roffit: use • instead of · for [bu]

roffit

@@ -586,7 +586,7 @@ sub parsefile {
             $txt =~ s/\\\(aq/&apos\;/g;
             $txt =~ s/\\\(cq/&apos\;/g;
             $txt =~ s/\\\(dq/&quot\;/g;
-            $txt =~ s:\\\[bu\]:&middot\;:gi;
+            $txt =~ s:\\\[bu\]:&bull\;:gi;
 
             # \e is the "escape character", defaults to backslash
             $txt =~ s/\\e/\/g;