Fix examples with type=

Some of the examples in 0.9.0 and 1.0.0 are incorrect: For instance 

org.scalastyle.scalariform.TodoCommentChecker

```
<check enabled="true" class="org.scalastyle.scalariform.TodoCommentChecker" level="warning">
 <parameters>
  <parameter default="TODO|FIXME" type="string" name="words"/>
 </parameters>
</check>
```