fix query values in params
fix query values in params

if you have an url like
```
http://localhost:8080/data/5?query=test&hello=now
```

the value for request.parameters was

```
5?query=test&hello=now
```

this fix, force this value avoiding any query string to be appended.

Now the value is only

```5```
vapor/vapor,qutheory/vapor,qutheory/vapor,kdawgwilk/vapor,kdawgwilk/vapor,vapor/vapor,vapor/vapor,LoganWright/vapor,qutheory/vapor,vapor/vapor,LoganWright/vapor,kdawgwilk/vapor,mpclarkson/vapor