CSS example: parse decimal form of nums correctly

Before, 0.02 could get parsed as 0 and 0.02 when looking for nums+

examples/css.pegjs

@@ -292,7 +292,7 @@ name
   = chars:nmchar+ { return chars.join(""); }
 
 num
-  = [+-]? ([0-9]+ / [0-9]* "." [0-9]+) ("e" [+-]? [0-9]+)? {
+  = [+-]? ([0-9]* "." [0-9]+ / [0-9]+) ("e" [+-]? [0-9]+)? {
       return parseFloat(text());
     }