[htmlify] fix a pod dissection bug

previously some routines (like uc, split) were not showing up in the index,
and no per-routine documentation was generated for them

htmlify.pl

@@ -105,6 +105,7 @@ ($out_dir = 'html', Bool :$debug)
             if @current && ($c ~~ $from || to(@current[0], $c)) {
                 take [@current];
                 @current = ();
+                @current.push: $c if $c ~~ $from;
             }
             elsif @current or $c ~~ $from {
                 @current.push: $c;